Been doing some digging on this. Mickey Finn was on the line up at The Edge on both 9th & 30th October.
His set at Psychosis - Timeslip (17th October) is most similar in terms of tune selection, so is his set on Green Apple which sounds like it’s from the end of October.
If the Grooverider tape was released at end of September, it may have been released first to see how well it sold then the Seduction tape may have been released on the back of this a month later. I don’t remember ever seeing the Grooverider tape bitd, only knew of its existence about 20 years later but I had the original Seduction tape & also a copy of the Ellis Dee tape. No idea when the Ellis Dee tape was released either as that was from June so months before its proposed date of Vision at the end of August.
The other odd thing is why the Mickey Finn tape wasn’t released by The Edge themselves as other sets from these potential dates made it to tape.
Not sure we’ll ever find out the exact info.