Quote: After searching for the Erase Every Other Row filter in Filters - Distorts and did not find it, I searched for it using the Help - Plug - in Browser, but did not find it again.
However, for stubbornness, I checked the shortcut by the "/" key and typed the initial part of the filter name (Erase) and voila! I found it.
This has come up occasionally. The old filters are gradually being migrated to GEGL. There are those labeled (legacy) which remain in the menu and some not in the menu but can still run. Guessing these might be a dependency for something else.
Quote: (How) Would you like to make this filter re-appear in the menu list (Filters - Distorts- Erase Every Other Row)?
erase-rows.scm has the registration lines commented out - uncomment the last two lines
Quote:How do I know which other filters don't appear in the menus but are still active in Gimp?
As far as I know, there is no definitive list and will change as Gimp develops - those legacy filters will go. the ones I know are three compiled plugins tile small , blinds, filter-pack (edit: you can get these with " / " search)
The only way I know to get these back (in the menu) are 'borrow' the equivalent plugin from Gimp 2.8 Put these in your Gimp User Profile plug-ins.