Yes, deleting or disassembling upgraded items should make your save safe to play.
As far as script rewrite, I've only recently managed to start it since I've bought a new computer and been busy setting everything on it up.
The rewrite itself will probably take a while since I'm essentially rewriting the entire code. I've started work on outfit upgrades, which should be done quickly. The real time sink is all the weapons.
ImpyInquisitor
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