So it might have to do with age....BUT, I had a similar incident this weekend.
My son...found my wife's purse, and found an OPEN ball point pen. He then designed quite a LARGE piece of artwork on the cabin ultraleather seats.
I tried - in order
1) water - nothing
2) all purpose cleaner - nothing
3) magic eraser - a little bit of removal
4) magic eraser with all purpose cleaner - moved a bit more
HAD nothing else to try, so now I am PANICED as I still have a LARGE design on my seats.
A buddy heard my cries and said try some Aerosol Spray Sun Tan Lotion at least 30 SPF (I questioned him only momentarily, but figured what do I have to lose)
GUESS WHAT - Instantly the pen started to lift...I sprayed it on, rubbed it in with my finger and the stain was lifting. After a couple wipes with a paper towel, it was 100% gone.
Have no idea what in there did the trick...but it worked and good as new.
Perhaps the timing has something to do with it, but dang it worked.