long tags prevent synching!

Unfortunately, when I moved my EndNote library to Zotero, some crazy long tags were generated. I tried deleting them manually, but there are just so many of them - I have two thousand items in my collection, and each may have 4-10 tags associated with them.

When I attempt synching, I always get an error message stating that tag "XYZZZZZZZZ" is too long. Is there a way of just deleting ALL tags, without going through them one by one?

I really want to use the synch option, and this is messing me up!

thanks
Zoirusha

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