Importing a data type via XML to merge it with an existing one results in limits being lost. This effect can be only seen when restarting the editor – as long as the editor is open, the limits are kept in memory (no matter if project is unloaded from memory and reloaded again).
An issue was addressed in the import mechanism for data types. Now, the data type is imported correctly and the limits not being lost.
Fixed on 30.05.2012, available from 7.00 SP0 Build 1