P: Ability to NOT import image keywords

John, what is this Top Secret fix that prevents keywords from being added to the Keyword list? I'm new to Lr, studying information sciences, and baffled at this ludicrous wonk.

Also for me this seems to be a very good idea - I will try ist at soon as possible!

For me, running "Purge unused keywords" would be somewhat disastrous, since I've spent a lot of time building up a hierarchical keyword list, much of which is there to apply to photographs I haven't taken yet (or at least haven't applied to my photos... yet). A lot of others have paid for large hierarchical keyword lists (and so are in a similar boat in that they definitely don't want to delete keywords they haven't tagged a photo with yet). I could see removing sections of such a keyword tree that I was sure I'd never use.

Anyway, the solution that does work for me, is to import new keywords into a parent term that I can (periodically) delete and re-create. Obviously there is a lot more work to maintaining my images' keyword metadata than that, but at least it helps avoid the issue of my keyword hierarchy base level getting flooded with duplicate terms that I don't want to keep and allows me to do just one "delete" action once I've migrated any wanted terms into the hierarchy or selected equivalent keywords.

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Thank you for your answer, but unfortunately that will not resolve my special problem. I have some keywords with synonyms (for which I thought it would make sense to have them exported as well) and those are added to my keyword list when I export to JPEG and reimport to the catalogue. I think I have unchecked all "export synonyms" boxes by now, but still there happen surprises. 
Anyway it seems that this is not a mayor issue.

In LR CC 2015, you can stop LR from importing a photo's keywords by defining an import metadata preset that clears the keywords from imported photos:




This ensures that any keywords in the photo's metadata will not be assigned to the photo in the LR catalog when it is imported. 

Unfortunately, those keywords will still be added to the Keyword list. (There is a separate bug report for that behavior, but I can't find it, unfortunately.) An easy but annoying workaround is to do Metadata > Purge Unused Keywords, which deletes all keywords that haven't been assigned to photos.

Hi there, I was going to address exactly the same problem ( reimporting images with keywords with synonyms rendering new keywords outside of the hirachy) when I found this blog. I am using LR 2015 CC, so it seems nothing has changed in the last 5 years? I also would appreciate a kind of checkbox. where I could decide if I like to import new keywords.

Thanks for the idea. @11037553.2 Ottomanic Importer supports "Ignore new keywords" feature :-).

Totally agree with this request. I often convert Raw to JPG, and an import will often create new keywords where I have specified synonyms. It's a real pain to go back, identify all the new keywords, and delete them. "Ignore new keywords" option during import would be a great addition (as opposed to "Ignore Keywords")

@V289_2.2, OttoImporter has option to remove pre-existing keywords upon import.