DB export/import

I was wondering what would be the best method to design a database table for best export/import operation.

Let me explain; I have a table that I rely heavily on it's auto insert IDs to call records, and I now need to export all data and then later import it, however if I do that, on import the IDs will be different since they will be sequential with no gaps caused by deleted records, and the whole system stops functioning.

So I was wondering if I should add a new column called [Ref_ID] and this won't be auto-generated, but then I would have the uniqueness problem.

Or should I import it to a table that has it's IDs (not auto-generated) and when all data is in, change it to primary key auto-generated ID, will this work?

Or, is there another better way?

Thanks michael, that really prompted me to look for that sort of functionality on MySQL (MyISAM) which I use, there might be something like that for it.

Apprecite any other ideas you guys may have.