@eschwarts: Thank you very much. This worked great. Between the backup and the copying, it took some time (like I said... lots of books
) but it duplicated well, and I am able to delete sections of the original TAG column without it affecting the MY TAGS column. Just what I was looking for. I assume (.*) and \1 are variations of 'copy all' and 'paste all' respectively.
And thank you for making your instructions idiot proof.
I appreciate that you did not say "Just use search and replace!"
@Better Red: Thanks for the suggestion. I actually did look at that plug-in before posting but it seemed that there were too many possible pitfalls for me to use it successfully at my current level of expertise (or lack thereof). Even the programmer warned against it ... and being a firm believer in Murphy's Law.... well, need I say more?
I mean, I am still trying to figure out what the heck "Library Metadata Backup Status" in Library maintenance refers to. (Its obviously not a back-up bc that is done by copying the file through Explorer, so what the heck does it do?)
But at some point in the future, I will experiment with it and/or other plug-ins. There are some good ideas there. At this point though, I just want to get the job done.
Thanks again to both of you for the quick response.