Alphabetical ordering in glossaries generated in Multiterm 2019

Hallo,
I'm sure there is an easy fix for this but I can't find it myself. When generating glossaries from Multiterm 2019, the RTFs come up with two sets of alphabetically sorted terms in one file. The first set is small but I can't figure out why there are two and fixing it manually with copy/paste is very tedious.  Any ideas? I've done reorgs, we use the most current version of Multiterm, I've search for solutions online, all to no avail so far....
Thanks and regards
Patricia