Find duplicate files with different names (but same Suffix)

[Peter10]

Example Files are :

2018_03_11_14_12_42.pdf

and file

2017-12-31 CUA - 2018_03_11_14_12_42.pdf


The Regex ( in Session Settings , Misc ) I was trying to use is
$1.pdf=\1.pdf

Any suggestions why this does not make the differently named files align .....?

[Aaron]

Hello,

The longer path will need to be on the Left side, as the Alignment Overrides only support RegEx on the left, with matching ($1) references on the right.

So a literal replacement would be:
2017-12-31 CUA - (2018_03_11_14_12_42.txt)
with
$1

Or you can replace parts of the Left with RegEx that also match on those sequences of the file name, like:
.* - (.*)
with
$1
(where the extra whitespace around - helps it match on only the middle - separator you have, assuming that pattern only occurs once).