Resource Usage Profile Cummulative Curves

Gentlemen,

I am currently re-baselining my schedule which contains activities (with resources assigned) that were completed in the past. While rebaselining, I put my data date to be "today" and when I resource load my past activities and future activities,the cummulative curves does not show what it should.

By that I mean that the budgeted cummulative curve shows that I have nothing budgeted for the "past" activities and then suddenly rises up at a later date to match the "actual units"

can someone help me fix this?

Thanks,

Brian