I made a ton of changes - also to the underlying templates, and the changes to the actual page often was to correspond with that, so a simple "undo" of this page in isolation of all of that, won't return it to that prior state, and rather is likely to break things.
Also I added a cargo query listing of grastas in pages such as Antiquity Garulea Continent (Another Dungeon), but that requires that the text on these pages matches, i.e. missing the word "Continent" causes a mismatch. As soon as the cache for that page gets purged, Support grastas are going to be missing from those PGAD & AGAD lists...
So if you like, help me to help you: what is the problem that you are trying to solve by this undo - and if there is a simple problem, why not make a forward change for it than to undo all of these at once?
Related: I searched all text ("Everything") on the wiki for "tables:Grasta" - but did I miss somewhere that grastas are being queried, elsewhere than on these pages and the new P/A/FGAD queries I made, that you are worried about being displayed correctly?