Well if it is a Universal File one may be lucky and get that file to import into I-Deas 8. Very Un likely but maybe.
If it is a package file I think you may be out of luck. I-Deas 8 is a very old version of I-Deas.
Keeping the history Will be very unlikely. SOrry finding a way to do this will be very tough. There is so many new features between 8 and 12 how is 8 going to read the new type features that the part has in 12.