Dear Jim
Thank you so much!
I installed the new version, commented all ship-replacements out, and tried it with these stories:
story 1 story 2 story 3 story 4
Story 1 is the "Harry Potter & Severus Snape" from earlier which now changed into "Harry & Severus" as it should. Story 2 has a tag "Loki/ Tony Stark" (with a space) which was changed to "Loki/Tony". Story 3 has a threesome slash pairing: "Uchiha Itachi/Uchiha Sasuke/Uzumaki Naruto" came (predictably) out as "Uchiha/Uchiha/Uzumaki", story 4 is a threesome '&' pairing - so it handles even 'more'somes.
Everything works fine for me. Thank you so much for looking into this and the time you have taken for helping me out!