Actions disappearing in script

[Tom]

Your screenshot looks like KM7. Have you been using KM8 and then gone back to KM7?

If Yes, then see here:

Show or hide actions with command-k

If you open Keyboard Maestro 7 after running Keyboard Maestro 8, you may damage your macros (specifically, Search & Replace and Filter actions may be lost). You might need to revert to the macros as they were before you ran Keyboard Maestro 7 (perhaps the revision from yesterday).