I imported a GEDCOM and the accents in the GEDCOM got misinterpreted for some surnames. I'd like to fix this by doing a global replace of one surname with another, to replace the improper
Kovaïč with the correct
Kovačič. I could do it one at a time on Ancestry.com but there are around 300, so that is very slow. Instead, I'd like to edit en mass.
I tried editing the 2017 format
.ftm file on my Mac that syncs with ancestry.com, but it is not text format, so the surname does not appear as plain text in it. If I export to GEDCOM and edit the GEDCOM, can I import it back into the same tree and not end up with two copies of people (incorrect and correct spelling)? If I export to GEDCOM and make a new tree, would I risk losing any information?