It's just old as hell and Extend is too old now to bother revamping the entire thing.
I will make the corrections you noted anyway though. For some of them like that 5A AA > 5C, that seems strange since as far as I know it should only be on CH. I think I was going for two different combos based on star use (1 and 2). Most of those combos were transcribed from match videos at the time.
> Is this character specific or am I missing something in this? Shouldn't a jc be between sj.B and sj.2A? Also the damage value is 1302.
Yeah, but I didn't write it because that's such a well known link it's just assumed. Like 2C > j.2A is also from a jump cancel but nobody writes 2C > jc > j.2A.
What you really want to master are the way different moves flow from each other, so you can just connect them as necessary.
Let me test out some of these 5A combos.