Dynamics GP to Business Central Migration: What the Process Actually Looks Like

Dynamics GP to Business Central

Introduction

The Dynamics GP to Business Central migration is one of the most consequential ERP decisions a mid-market company will make, and it is one where the gap between a well-run implementation and a poorly scoped one shows up directly on the income statement. I’m Zach Karahalios, Director of Business Development at Volt Technologies, and I’ve personally guided companies through this transition more times than I can count. In this guide, I’ll walk you through exactly how we run a Dynamics GP to Business Central migration, from the first assessment call to go-live day, so your team knows what’s coming and how to get it right. 

Table of Contents

What Is a Dynamics GP to Business Central Migration?

A Dynamics GP to Business Central migration is the structured process of moving your business data, configurations, integrations, and process workflows from Microsoft's legacy on-premises ERP, Dynamics GP, formerly known as Great Plains, to its cloud-native successor, Dynamics 365 Business Central. The project spans data extraction and cleansing, functional process redesign, integration rebuilding, user validation, and a governed go-live. For most mid-market organizations, the full process runs three to twelve months depending on environment complexity. 

Watch the Video: Prefer to hear it directly? Watch Zach walk through the full migration process in this short video.

Why Organizations Are Prioritizing the Move Off Dynamics GP 

Microsoft has not been subtle about the direction of its ERP investment. Dynamics GP receives no new feature development. Business Central ships two major updates per year, Wave 1 in spring, Wave 2 in fall, and every release adds Copilot capabilities, automation agents, and deeper integration with Microsoft 365, Power Platform, and Azure that GP will never see.  

For the organizations we work with, the Dynamics GP to Business Central migration is not a question of if, it is a question of when and how. Here is what drives the timeline for most of our clients: 

  • Microsoft’s diminishing GP investment creates security, compliance, and operational exposure for companies that stay too long. The longer you wait, the harder the eventual migration becomes as the technology gap widens. 
  • The platform runs in the Microsoft Azure cloud. No on-premises servers, no infrastructure refresh cycles, no version upgrade projects every three to five years. 
  • Copilot in Business Central, including the Sales Order Agent, Payables Agent, and Expense Agent, delivers AI-driven automation that GP cannot replicate. These are not future features; they are generally available today. 
  • Power BI is embedded natively in the platform. SSRS-dependent GP reporting shops gain a modern analytics layer without a separate BI implementation project. 
  • The Microsoft 365 integration, Outlook, Teams, SharePoint, runs natively in Dynamics 365 in ways that require custom middleware in a GP environment. 

How We Run a Dynamics GP to Business Central Migration: Step by Step 

Every Dynamics GP to Business Central migration we run at Volt Technologies follows a structured methodology we’ve refined across 30+ years of Microsoft ERP implementations. Here is what each phase looks like. 

Step 1: GP Migration Assessment 

Before we scope anything, we run the GP Migration Assessment Tool, a Microsoft-provided utility that analyzes your existing GP environment and surfaces data complexity, customization depth, and integration dependencies. This is not optional. It is the document we use to build an accurate statement of work, and it is what separates a well-scoped Dynamics GP to Business Central migration from one that runs over budget when surprises emerge mid-project. 

Step 2: Functional and Technical Scoping 

With the assessment in hand, our team works with yours to define the full scope, both functional and technical. 

Functional scope maps your core process flows: purchasing, sales, financial management, inventory, and warehouse operations. We need to understand exactly how your team works today before we can design how Business Central will support those workflows going forward. 

Technical scope, what we call our waterfall task list, covers four areas that must be resolved before a single record moves: 

  • Data migration: which records transfer, which get cleansed out, and how the migration runs are structured and validated. 
  • Integrations: every third-party or custom integration running in your GP environment must be evaluated and either replicated natively in Business Central or replaced with a supported connector. 
  • Critical reports: we map every daily, weekly, and monthly report your team depends on and confirm the delivery mechanism in Business Central, whether that is a native report, a Power BI dataset, or a custom extension. 
  • Extensions and ISVs: most GP environments have been extended over the years, through custom code, vertical solutions, or Independent Software Vendor add-ons. We assess each one against Business Central’s out-of-the-box capabilities and identify where a new ISV extension is required.  

Step 3: Data Migration and Cleansing 

Data migration is the backbone of any Dynamics GP to Business Central migration, and it is where we apply the most disciplined planning. The process works in two stages.  

First, we define the migration scope: customers, vendors, items, chart of accounts, and open transactions are the standard set. For historical financial data, our standard recommendation is three years of summary-level records, though every client’s compliance and operational requirements differ, and we scope to what your business actually needs. 

Second, this is where organizations leave real value on the table when they skip it, we treat the migration as a data cleansing exercise. Do not carry 20 years of inactive vendors, obsolete SKUs, and redundant GL accounts into a new system. Define what is active and leave everything else behind. 

Key point: A Business Central go-live is not a data copy. It is a structured migration with validation gates at every stage. Clean data going in produces a clean system on day one.

Step 4: Conference Room Pilots and Mock Go-Lives 

One of the defining elements of our Dynamics GP to Business Central migration methodology is the conference room pilot, what we call the mock go-live. During each mock go-live, our team performs a complete data cutover from GP into the new system and runs a structured validation pass. 

We validate key customer and vendor records, verify field mappings, check chart of account balances, and confirm that open transactions process correctly. Depending on environment complexity, we run this process anywhere from once to four times, each pass tightening the migration and reducing the risk that something unexpected surfaces on actual go-live day. 

This is not a check-the-box exercise. It is how we guarantee that when the switch flips, your team is working with data they can trust. 

Step 5: Project Governance and Decision Velocity 

Here is the honest truth about where a Dynamics GP to Business Central migration runs into trouble: it is almost never the technology. It is decision velocity. 

When a key process decision, how to handle a chart of accounts restructure, how to configure a specific purchasing workflow, sits unresolved for a week or two, the project stalls. Two stalls become a schedule slip. A schedule slip becomes a budget problem, and budget problems erode the business case that justified the migration in the first place. 

Our governance structure is built to prevent this:

  • Weekly project manager syncs between our PM and yours, task completion, open risks, upcoming decisions, nothing left in a queue. 
  • Monthly steering committee meetings between your executive leadership and ours, full transparency on milestones, budgets, key risks, and decisions that need escalation. 
  • Daily collaboration between our consultants and your functional team, process design, data validation, standard operating procedures, the work that cannot be delegated to email threads. 

What Actually Goes Wrong in GP Migrations and How We Prevent It 

We have run enough Dynamics GP to Business Central migration projects to know exactly where the friction comes from. These are the patterns we see most, and the ones we build our methodology specifically to address. 

  • Teams underestimate their own workload. The implementation partner handles the technical execution, but this is a collaborative project. Your operations, finance, and IT staff will be in daily working sessions, reviewing process designs, validating data, completing assigned tasks, approving standard operating procedures. The clients who get the best results come in knowing that. 
  • Dirty data gets migrated. Skipping the cleansing pass carries GP’s data quality problems directly into your new ERP, plus new issues introduced by the migration itself. Every inactive record, duplicate vendor, and orphaned account you migrate is technical debt on day one of the new system. 
  • Custom code gets assumed to transfer. GP customizations do not translate 1:1. Some will be replaced by Business Central’s native functionality. Others require new ISV solutions. Discovering this in week eight of an implementation, rather than in the scoping phase, is expensive. 
  • Scope changes arrive late. Functional design exists precisely to capture requirements before build begins. Changes introduced during testing or validation multiply in cost and timeline impact at a rate that surprises clients who have not been through this before. 

Why Volt Technologies for Your Dynamics GP to Business Central Migration 

We are a 10x Microsoft Inner Circle partner, a designation held by fewer than 1% of Microsoft Business Applications partners worldwide. Our team has 30+ years of Microsoft ERP experience, and the Dynamics GP to Business Central migration is not a peripheral service line for us. It is work we have done hundreds of times, across manufacturing, distribution, professional services, retail, and consumer brands. 

Four things define how we engage on every project:  

  • Industry depth. We bring vertical expertise to the implementation, we know what a distribution company’s fulfillment workflows need to look like in Business Central, and we know what a consumer brand’s costing and seasonality requirements demand. We are not a generalist partner applying a generic ERP template. 
  • A hands-on engagement model. Your team works directly with our consultants, not a project coordinator who relays messages between you and a delivery team in another time zone. Every design decision gets made in the room, with the people who understand your business. 
  • Enterprise pedigree at mid-market scale. Our roots are in enterprise ERP, we have implemented Microsoft platforms for organizations with hundreds of millions in revenue. We bring that rigor to mid-market projects without the overhead that makes enterprise implementations slow and expensive. 
  • 24/7 follow-the-sun support. When something needs attention after go-live, our team is available. We do not hand clients a support ticket portal and wish them luck. 

A Dynamics GP to Business Central migration is a decade-plus operating decision. The ERP your organization runs on for the next ten years will be built on the foundation laid in this implementation. That is not a reason to delay, it is a reason to choose a partner who has earned the right to be trusted with it. 

Conclusion 

A Dynamics GP to Business Central migration done right is a ten-year investment in operational capability. Done poorly, with a rushed scope, skipped data cleansing, or a partner who disappears after training week, it is a ten-year liability. The difference between the two outcomes is almost entirely determined in the first sixty days: how well the project is scoped, how committed the internal team is, and how experienced the implementation partner is at running these projects at scale. 

At Volt Technologies, we have been running Microsoft ERP implementations for over thirty years. We are a 10x Microsoft Inner Circle partner, and we have earned that standing by delivering implementations that hold up, not just at go-live, but three years after, when the business has grown and the system has had to grow with it. 

If you are planning your migration from Dynamics GP to Business Central and want a partner who will scope it honestly, run it rigorously, and stay with you long after the project closes, we want to hear from you. 

Frequently Asked Questions 

The timeline depends on three variables: the size and quality of your data set, the number of active integrations in your GP environment, and the depth of customization built on top of GP over the years. Straightforward migrations run three to six months. Complex environments with significant ISV extensions, heavily customized workflows, or large historical data sets run six to twelve months. The GP Migration Assessment gives us the data to give you an accurate range before the project starts, not a number we revise upward once we are already engaged. 

Customers, vendors, items, chart of accounts, and open transactions are the standard scope. Historical financial data, three years of summary-level records is our starting point, is scoped based on your compliance requirements and how your team uses historical data in practice. We use the migration as a cleansing opportunity: inactive vendors, obsolete items, and redundant accounts do not make the trip. 

Not without evaluation. Each integration running in your GP environment must be assessed individually. Many connect natively through Business Central’s Microsoft 365, Power Platform, or Azure connectors. Others require new ISV solutions or custom API work. We map every integration during technical scoping, before any build begins, so there are no surprises when you go live. 

Microsoft has reduced active investment in Dynamics GP and the platform will not receive the continuous cloud updates, Copilot features, or AI agents that Business Central receives with every wave release. Extended support runs through 2031 for GP 18.x, but organizations should be planning their migration timeline now, the longer the gap between GP's capabilities and Business Central's grows, the more complex the eventual transition becomes.

We are a 10x Microsoft Inner Circle partner with 30+ years of Microsoft ERP experience, and we specialize in the mid-market segment where ERP implementations tend to be either over-engineered by enterprise partners or under-resourced by boutique ones. Our engagement model keeps your team working directly with our consultants. Our 24/7 follow-the-sun support means the relationship does not end at go-live. And our vertical expertise means we are not learning your industry on your dime. 

Ready to start your migration?

Our team will run a GP Migration Assessment with you at no cost. We will map your data complexity, integrations, and timeline so you know exactly what the project entails before you commit.
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Mason Whitaker

Microsoft Dynamics 365 | Simplify your IT footprint and make decisions faster.