SONAR + MIDI

hey there...

i'm glad that i can post my question in this forum - you were always able to help me ;)

i got a simple problem: everytime i continue working on an old project, i have to reassign all my midi-controllers... can somebody please tell me why sonar doesn't remember the assignments i made the last time working on my project? - - - yes, of course i saved them in the project...

thx for your help,
cacpar