5uck3rpunch, i am not sure if you found the solution yet, but I'll post up what I have found to work though. I hope this may help you
I've tried the following combinations:
CleanROM & SC.lite.SAV file renamed with "8.3 File Name" [NOT WORKING]
SuperMode Patched ROM & SC.lite.SAV file [WORKING]
(8.3 File Name is the format that is also being referred to as "truncated with ~ tilde")
When rom are patched in SuperMode, "8.3 File Names" are not created because a "Long File Name" with the strandard SuperCard .SAV format is pre-made.
I've tested these results on Castlevania PoR and also several other programs with SAV files created from SC.Firmware 2.56 through 2.58.
The only way I have been able to get my old SAV files to work, is by first patching the ROM to SuperMode and then replacing the new SAV with my SC.lite SAV files.
...
Side Note, I have also been messing around with the following GENUINE MicroSD Cards.
GENUINE SanDisk MicroSD 2gb, RETAIL (purchased from VERIZON)
GENUINE Kingston MicroSD 512mb RETAIL (purchased from NEWEGG)
When I run the SC(ONE) Auto Speed Set program, the SanDisk 2gb can only be detected as "5" and gets set to 2x - No matter if it is formated in Fat32 or Fat16. I've tried the 2x setting in PoR at a location I've known to lock-up at and sure enough, it locks up. By manually setting to 3x, the game is extremely choppy and is completely unplayable - it locks up when entering certain room. at 3x, PoR will lockup before it even gets into the game - ie; at boot. PoR on the SC(ONE) plays just fine and only randomly locks up. The DoS intro movie is unbearably jerky and not even possable to be watched - Although it does play through on the SC.lite with only mild issues.
When I run the SC(ONE) Auto Speed Set program, the Kingston 512mb is detected at "30" and can be set to 4x. The card is formatted to FAT16. I've tried PoR for several hours and have not had a single lock up yet. Aswell, the DoS intro movie plays flawlessly on this card.
Conclusion, I will be using the much slower SanDisk 2gb card in the SC.lite. And will use the much quicker Kingston in the SC(ONE).
Again, I hope this information can help someone.