@johner23: thx for the files - latest beta handles this better:
https://github.com/SubtitleEdit/subt...leEditBeta.zip
SE adds/keeps the alignment though, so that why you'll see lines starting with e.g. "[\an8}". If you want to remove them, just select all lines in the list view (ctrl+a), right click, choose "Remove formatting -> Remove all formattings / Remove alignment".