RXASSEMBLERPROPERTIES NEXTNUMBER

Rhythmyx 6.7
Patch RX-16359

Scenario:
Deployed an MSM archive to our production application server.
This archive include site definitions with context variables.
Deployment without error.

Later, attempted to add a context variable to a site definition.
ID chosen violates the unique constraint of the PROPERTYID column of the RXASSEMBLERPROPERTIES table.

I checked in the NEXTNUMBER table, but I don’t seen anything that looks even close to a relationship with either the column, or a NEXTNR value that is close to what I’m seeing.

Does anyone know where the next number for PROPERTYID within the RXASSEMBLERPROPERTIES table is stored?

Yes, I’ve already tried a server restart on the off-chance that this what related to a caching problem.