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I wont to make a donut out of an polygon in MapInfo. I store my data in Sql Server 2008 R2 and access it as a linked table. In SQL Server the Id-column is an Identity column that is used to as a primary key and is related as a foreign key in other tables.

My problem is when I try to make the donut the Id is reset to zero and when I save the changes it gets an new Id in the database, since I use the Id to connect to other tables you can se the problem. Is there a way to avoid resetting the Id?

Regards Ulrik

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how are you trying to make your donut? By using the "Set Target" and "Erase"? –  Mr_Chimp May 2 '12 at 15:22

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