Assotiation mode question

IM SORRY if im posting it,in wrong section
im just cannt find a right one for this,so im will ask here

why , in assotiation mode,when u play a drill with a player,or development,player loosing rating?
i mean for example,tyrus thomas have 69,and after development drill,that have succes - he now have 66 - why?
im developing his post defence attributes,and after drill his post d. attributes all have (- 20)
please any suggestion?

Hey, yes. I have the same problem...

yea they are fixing that in the patch

patch is going to be realesed in upcoming two weeks,isnt it?

yep