1 - There is no rebuilt of the samples with a "mame profile" made from .exe.
There is no crc value for the samples witch can be retrive from listxml.
clrmamepro find its info in listxml, and clrmamepro rebuilt is based on crc check...
So no rebuilt...

You must use a external/supplémental datfile for samples, if you want/to use the rebuilt feature.
Look for it in the downlaod section of Roman website..

2 - It need Roman's testing and conclusion...