When you took the fresh copy of the project from source control, whilst I am not a source control user, surely that should have downloaded all the files in the project. That would include snippetcategories.xml.
I am therefore confused as to what you have done that is different, other than copy it separately.
My other concern is that if your system did not download the file when you took a fresh copy, I am wondering if this problem could occur again.
Adobe posted this information in a thread when the new UI was introduced.
****************************************
"Files inside .rh folder need not be checked-in to version control.
Topics kept inside top-level-foldername/.rh/.username.fr.cache/contents have topic files whose text is saved here for find and replace feature. We find in these files for text search.
Files like .username.db.json is for reading the project while opening. Project open is faster with this cache file.
File .username.preferences.json contains detail related to recently opened files, generated outputs etc.
So yes, recommendation is not to check-in these files to version control. We make a ignore list of these files for our out of the box version control sysytems like GIT, TFS etc."
****************************************
________________________________________________________
My site www.grainge.org includes many free Authoring and RoboHelp resources that may be of help.
... View more