Sub second issue with 4.06 + question/request

Hello,

Thank you for this great tool, the most powerful I've seen so far!
=> I just purchased a license :-)

I just upgraded from 3.85 to 4.06, and the sub seconds do not seem to be added anymore, only the separator "-" is added. Is there an issue?

Request: regarding the sub second tag (which is great, I could finally get rid of the arbitrary a, b, c...), it seems to be only applied to 1 of the 2 files (or 2 of the 3, etc.), e.g. if I have to conflicting files, they will be named:
<date time>-23.jpg
<date time>.jpg

However I would like the sub second appendix to be applied to all the conflicting files, e.g.:
<date time>-23.jpg
<date time>-17.jpg
Is it possible?

Regards,
Gauthier