I have a large text file (2352 lines) which periodically contains the word `Generation`. I now want to delete all lines containing this word.
But when I select the word, do `mc/mark-all-like-this`, `C-a` and `C-k` not all instances, but only a few that are nearby, are deleted.

My `mc/cmds-to-run-once` is empty.

Is there a setting so that all file wide instances are marked/deleted?
What am I missing?