I may have just solved (part) of the problem. There appears to be CMRG in the meta data of the file in the title field. In doing further research today, it would appear its another program (that does conversion after FileBot) to MP4/AAC (regardless of source) that is picking up the "Title" and for ...

Registered/Licensed user. There are a bunch (maybe 5%) of files (usually movies) that are renamed and "found" to be called CMRG.MP4 (Avi/etc) after they are renamed. Sometimes this is in the file name, sometimes its in the metadata. Doesn't seem to happen in TV shows, just movies. FileBot 4.8.2 ...