How to transfer saves to earlier version?

[Felinez]

How do I transfer my save files to an earlier version? I'm playing Sorcerer's Stone on 4.0.2 with a 64% completion rate last saved today (1/5) at 6:14 pm and a new file at 2% saved today at 6:23 pm. My computer files, however, say that "MemoryCardA.USA.raw" was saved on Christmas at 10:32 pm, "SRAM.raw" on 12/28 at 3:56 pm and "lastState.sav" on 12/28 at 1:13 pm. I've copied all of the above files to 3.0 and replaced the whole User file of 3.5 with that of 4.0.2, but when I load the game on 3.5 or 3.0, the saved file is at 17% from Christmas at 1:59 pm.