Yes, there had been a switch from "local"/temporary table to persisted storage. It should have been initialized but seem to have failed to do so. I had to switch back to storage as other mods like the blueprint "lab-like" editor requires the exclusion data being persisted. :-( I had a lengthy discussion there and he was not willing to add some simple code to his mod. Now the ball has bounced back to me as storage.excluded cannot be initialized in control.lua file (tried it already) and never during on_init/on_load phases.
I have now uploaded 1.4.11 which should have it fixed. I have tested it with an existing save-game and a fresh new start.