Duration increase impacts my budgeted quantities

Hi All,

I am having some issues with budgeted qtys/actual qtys/ remaining qtys.

My example is a simple one, I have an activity - Open Drain Lining. I have added a material resource and assigned a total qty of 710sqm. The task itself has now started and is now expected to take 2x a long. This is were my problem kicks in, my budgeted qty now increases and the actual/remainig units are out of whack. I have tried several activity types to no avail. I would love the budgeted qty to remain the same and the actual/remaining units total the budgeted qty no matter how long or short the activity duration is.

What I would like to see is even if the lining took 2 years it is still 710 and the remaining/actual is a product of the 710 based on % duraiton complete. This is playing having with my actuals complete and hence throwing out my % complete, overall progress.

Thanks heaps, just when you think you have P6 nailed you get more issues.