How to Switch DMS or GMS Providers Without Losing Your Data

The single biggest reason garages and dealers stay on software they are unhappy with is fear of the migration itself — specifically, fear of losing years of customer history, vehicle records, and job data in the process. That fear is reasonable, because a badly-run migration can genuinely lose data. A well-run one does not have to.

Before you give notice on your current system

• Export everything while you still have full access — customer records, vehicle history, stock, supplier and parts data, and outstanding invoices. Do this even before you have chosen a replacement.
• Check your current contract for an exit/export clause. Some providers charge for data export, or only provide it in a format that is hard to reuse — better to know this now than after you have cancelled.
• Confirm what format the export comes in (CSV is usually fine; a proprietary format you cannot open yourself is a red flag).

What actually needs to migrate cleanly

• Customer contact details and service history — this is what your team needs to avoid awkward "we have no record of your last visit" conversations
• Vehicle records — registration, VIN, MOT/service due dates, and any outstanding work
• Open jobs and bookings — anything currently in progress should never be mid-job when the switch happens
• Stock records, for dealers — current vehicles, pricing, and advertising status

Run both systems in parallel, briefly

The safest migrations run old and new side by side for one to two weeks rather than cutting over in one go. New bookings go into the new system; anything already scheduled in the old one gets honoured there until it is done. This avoids the single riskiest failure mode — a job or booking that exists in neither system because it fell in the gap.

What good providers do to make this easier

A genuinely confident provider will import your historical data for you as part of onboarding, rather than leaving you to re-key years of customer records by hand. If a provider cannot tell you clearly how data gets in, or how you would get it back out again if you ever left, that is worth treating as a warning sign before you sign anything — not after.