(Prepare to) fix your shit.
We'll be running ACE3 soon. As a result, your missions are going to burst into flames and be rendered unidentifiable by their next of kin. You, yes you, the mission maker, should probably go ahead and prepare an ACE3 compatible version.
The two things that will fuck you up will be the CSE module nonsense, and the CSE > ACE medical gear conversions. If you're too lazy to look for yourself, most of them are similar, and at any rate, it's an easy find/replace in the gearscript for most everyone.
Here's the new medical item class list. They're still items. Items items items.