please help, resources quantities not behaving as usual

I am using Primavera 3.1 & I have a schedule which has resources that has no unit costs & cost accounts. copied it and added the cost accounts and the unit costs. the original schedule have already been updated for several weeks. after i set up the other and updated the same with the progress (including actual dates) from the original schedule, the historical data has been changed somehow. the curves & histograms of the two with regards to the budget quantities were very diffent. another thing i noticed was before, when i input the percent complete of the activity, it automatically computes for the quantities this period and the quantities to date although not with the resource precent complete/expended. however, now even if ive updated the progress of the activities, it doesnt reflect on the resources’ quantities any more. i have more than 1 resource per activity. i also noticed that the the resouce early dates of the activities does not equal that of the activities actual dates.

can someone please help me resolve the issue. ive been figuring it out for about 3 days now and i still dont have a clear picture as to the explanation behind it or better yet a solution to the problem.