I have about 100+ matrix jobs using "Execute Scripts" with "Execute script on Matrix".
After upgrding the Post-Build-Script plugin from 0.18.1 to 1.0.0 or newer,
the "Execute script on Matrix" is missing and not working (the step will be executed on both Matrix and axis).

I saw there are a new Post-Build step named "Execute Scripts on Matrix" with option to select "Execute script on Matrix".

The upgrade should correctly migrate the previous old configuration with "Execute script on Matrix" to the new job step "Execute Scripts on Matrix".

or at least provide a transition period that both regular "Execute Scripts" and "Execute Scripts on Matrix" steps could support the options to select "Execute script on Matrix/Axis/both".