When trying to fix the name of a ROM, the file gets deleted.
This happens using the Maybe-Intro Nintendo Super Famicom [T-En] (20121007).dat file (attached). I suspect the problem could be linked to the fact this dat file uses different names the unzipped and zipped files.
The ROM I could reproduce the problem with is "Dragon Quest I & II (Japan) [T-En by RPGOne v2.0 DW]". The renaming happens successfully when the file is unzipped, but the file gets deleted when it is zipped.