As I have mentioned some other times, I think the accepted wisdom for how/why beading behavior changes, and how easily or not easily products are removed, are not based in reality.
Without going into a long story, back in the old days when you would apply a "wax" and then the beading would drop off after a few weeks, and you presumed the LSP was "dead", or say after a Dawn wash, the reality may have been the LSP was "clogged" by the wash. I don`t feel like finding and linking the threads, but the point is when you prepped your waxed car for Zaino by doing a "strip" wash with Dawn to get a pristine surface, that "pristine" surface was in reality likely your old LSP topped by a layer of Dawn sheeting polymers (to keep your dishes from getting water spots), which you then applied your Zaino on top of.
So I would encourage you to do an IPA wipe, or just apply your favorite LSP, and if your sheeting comes back, call it a day.
Ok, I lied, here`s the threads:
LSP stripping
Sealant Test: PowerLock (+/-) BlackHole, Wolfgang DGPS, & BlackFire WD
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