Well I think I found the problem.
In windows the regular quotation mark character is not allowed.
If we create a new file and input " in the file name it will block it.
However, I downloaded some emails into a folder and it uses a special/different quotation character.
I placed the mouse cursor over that character and copied it (ctrl+c) and I was able ...
Find what: (?<!-)\b(\l+)-(\l+)\b(?!-)
Replace with: $1$2
CHECK Match case
CHECK Wrap around
CHECK Regular expression
(?<!-) # negative lookbehind, make sure we haven't an hyphen before
\b # word boundary
(\l+) # group 1, 1 or more small letters
- # an hyphen
(\l+) # group 2, 1 or more ...
[using Microsoft Outlook for Microsoft 365 Enterprise at my company,
Version 2008 (Build 13127.21348)]
Within Outlook, select Search > Search Tools > Advanced Find
In the Appointments and Meetings tab Search for the word(s): field enter the word (including special characters) you are trying to find (e.g. Training:)
In the More ...