I can't rename the modeling convention:
Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.
This is a known limitation and has already been reported for future improvement. If you are affected by this limitation and want to be updated about the status of this feature request, please create a ticket in the SAP Support Launchpad and reference the ticket number PM-314.
KBA , BPI-SIG-PM-MOD-EDT , Graphical Editor for SAP Signavio Process Manager , Product Enhancement