Thanks for the input, Dennis! It’s always better to hear that somebody is using an attribute before its removed. :-)
Looking at the OOAofOOA, I see that only Obj_ID is marked as an identifier, and I know BridgePoint will complain about duplicate Key_Lett values.
* Name should be I2
* SS_ID appears to be unused now, but SS_ID and Numb should be I3.
I know numbering used to be tied to the Subsystem. It looks like Package is now responsible for numbering, so all the classes hanging on to SS_ID should probably be related to Package and SS_ID should be replaced with a reference to Package_ID.
IAC, adding an option to turn off class autonumbering should be possible.