Animation 2.4 > 2.6 error "failed to resolve data path"

gooday blenderheads
i try to bring an 2.49b file to 2.65a

i open the file in 2.65a click the menu > info > fix broken fcurves and drivers
because 2.49b animations dont work anymore

then in the console many errors occur “failed to resolve data path”

mainly bones got problems - but also other objects

is there an “update path” wich i have to follow ???
for exsample 2.49b > 2.57 > 2.65A

i have tryed some versions but that doesnt give me another result

hope someone got an info that helps…

happy new year soooooon :yes:

You could try Channel / Revive Disabled F Curves menu entry in graph editor