The five flavours of accounting data migration

Switching accounting software used to feel like moving house with no boxes. You knew everything had to come across. You just had no idea how long it would take, what might break, or whether you’d find half your things missing on the other side. Thankfully, migration has grown up.

At Dataswitcher and Movemybooks, we’ve completed 250,000+ migrations, and over time we’ve noticed something interesting: not all migrations are the same. In fact, they usually fall into five distinct flavours. Understanding which one you’re dealing with makes the whole process much easier.

1. Self-Serve: the DIY migration

Some businesses want speed and control. They know their data is clean, their systems are supported and they’re perfectly comfortable running the migration themselves. For these situations, a self-serve automated migration is ideal. Using a guided migration wizard, customers connect their source system, select their target platform and start the process. The platform then handles the rest: extracting the data, mapping it correctly and transferring it to the new accounting system. Most conversions complete in under 60 minutes. No consultants and no lengthy projects. Just clean, automated migration.

Self-serve migrations are particularly well suited for:

• tech-confident accountants

• smaller businesses with straightforward setups

• standard system-to-system migrations

When the data structure is clear and the conversion path is supported, this is by far the fastest and most cost-effective way to switch systems.

2. Assisted Move: the “just handle it for me” option

Not every business wants to press the button themselves. Many organisations prefer the reassurance of knowing that a migration specialist is managing the process from start to finish. That’s where Assisted Move comes in. With Assisted Move, the same automated conversion technology is used, but the Dataswitcher or Movemybooks team runs the migration on the customer’s behalf.

That means the team will:

• review the source system

• set up the migration environment

• run the conversion process

• perform validation checks afterwards

For busy business owners or finance teams, this removes the workload entirely. They don’t need to worry about the technical steps or the timing of the migration; everything is managed for them. This approach is particularly useful for businesses that want a safe, hands-off transition while still benefiting from the speed of automated migration technology.

3. Batch Conversion: the accountant’s favourite

Accounting firms often face a different challenge altogether. They’re not migrating one client, but they’re migrating dozens, sometimes hundreds. This usually happens when a firm decides to standardise on a single accounting platform, or when a software vendor runs a migration campaign across its partner ecosystem. Either way, the challenge isn’t just the migration itself; it’s managing migrations at scale. Batch Conversion is designed specifically for this scenario.

Instead of running individual conversions one by one, migrations are organised into structured batches. This allows accounting firms and migration specialists to manage large volumes of client datasets in a controlled and predictable way.

Batch migration typically includes:

• structured timelines for each migration wave

• validation checks across multiple datasets

• centralised management of migration progress

• coordinated rollout across client portfolios

For accounting firms looking to standardise their tech stack, batch migration can turn what used to be a logistical nightmare into a well-structured project.

4. Batch+ Conversion: when automation alone isn’t enough

Sometimes accountants need to migrate large numbers of clients, but there’s a catch. The systems involved may not have a fully supported automated conversion path. Perhaps the source platform is a legacy system. Perhaps the data is exported via spreadsheets, or perhaps the migration involves unusual data structures that require additional mapping. That’s where Batch+ Conversion comes in. Batch+ combines the structured rollout of Batch Conversion with the additional flexibility needed for unsupported or partially supported systems. Instead of relying purely on automation,

Batch+ projects typically involve:

• pilot migrations with sample datasets

• detailed scoping and data mapping

• agreement on migration expectations

• structured batch execution once the process is validated

This approach allows accounting firms to migrate large portfolios of clients even when automation alone isn’t enough. In other words: scale where possible, expertise where necessary.

5. Assisted+ Move: when things get interesting

Some migrations are simply more complex. Legacy systems, ERP platforms, custom exports: data that exists in multiple systems at once. Automation alone cannot solve every scenario, and trying to force it often leads to frustration. That’s where Assisted+ Move comes in. Assisted+ is designed for migrations that require a more tailored, project-based approach. These are typically mid-market or enterprise-level migrations where the data environment is more complex than a standard accounting system.

Examples might include migrations from platforms such as:

• NetSuite

• Exact

• Twinfield

• AccountsIQ

• bespoke or legacy systems

In these situations, migration specialists work closely with the business to scope the project, map the data and configure the migration process. Assisted+ migrations often involve:

• custom data mapping

• structured migration planning

• validation and reconciliation processes

• dedicated project support

The goal remains the same: a predictable, controlled transition, even when the data environment is more complex.

The real takeaway

Successful migration is simply about choosing the right approach for the situation. Some migrations are fast and fully automated. Others require more structure or specialised expertise. But once the right route is chosen, the process becomes far more manageable, and that’s the real shift in the market. What used to take days can now take minutes. And for businesses, accountants and software vendors alike, that changes everything.