first off- threads have changed alot in 10 years- is it like fishing line? going to be poky-if a thread breaks? stretches, melts when touched with an iron?
if any of these things are true i would not use it-
if it is soft (like thread) does not melt when touched with the iron, does not poke like a piece of fishing line/wire you could try it. some of the invisible threads from back then were pretty horrible- and they stretch & break if you sew too fast- cause puckering-
you might want to do some research on the differences in invisible threads and make sure you have one that is right for your project- some are much better suited for wallhangings/ some are ok for used items (like bed quilts)