Hello @SteveC5373 ,
Most integrations in general should work as a one-way street into your CTCT account, so you needn't worry about them removing your contacts, only adding new ones / updating existing ones' details. You may be able to find a 3rd party integration with DonorPerfect elsewhere online, otherwise you may just need to export your contacts manually from your database there, then upload as a regular file.
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