Save occurence problem in ST8

Hello, all

We have an application that was created in ST6 and it works. The problem that we have after compilation to ST8: We make some operations in assembly occurence (par or psm) and we see the changes in assembly, but the changes in real does not exists: if I open part I do not see the changes and then I back to assembly I do not see it too. If I try to save the part by code I get message that the part cann't be saved (looks like the part locks by SE)

Any idea?

Thanks. Vadim