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Seems like that would violate the license. So, Pro/E might not accept the license if you used a WF2 vendor deamon with a WF1 license. You should probably think about going back to the previous version of glibc. If you are going to use old software you need to leave your computer in a state that the software needs it to be in. If you need a computer to do newer stuff, maybe you need to get a second computer.
Sorry. I would be scared to send anything. I don't want PTC to have to search me out for violating the agreement.