Yes, I do. When the resource is assigned to more than one task in the timeframe, the percent allocation value does not roll up to the project level. I do not know why.

The best I can suggest is to see if you can copy/paste the data out to Excel and perform the calculations there if using the Work value isn't sufficient.

It 'a shame it does not work!
I'll do it in excel, thank you Julia for your support

(perhaps in Project 2007 it worked)
http://forums.techarena.in/microsoft...ct/1104057.htm

Actually the Resource Group filter still works in Project 2010 - the Percent allocation rolls up to the group level. The resource group is resource field, while we are using Project as an assignment group.