April 23rd, 2017.
Depending on what your demil code was changed to, gentlemen, in terms of its restrictiveness on the end use, yes, Uncle can cause you all sorts of grief if you can't account for the equipment or its disposition. And if it should require returning the now non-existent or exported items.... Well, you better get a good lawyer, but Uncle has more money and more lawyers, so watch out.
Uncle may not own it, but you, or someone in the ownership chain, did sign it. Ignorance is not bliss, nor is it an adequate defense when buying military surplus vehicles and equipment. Too many members skate around that EUC requirement thinking that it won't "get" them, but it can. Background check your buyer, and maintain careful disposition records, or Uncle may take a bite out of you sometime in the future.