I've developed a new custom report that will isolate BAC and EAC changes from the last reporting period to the current period. This is a banded report, so it will report changes for all elements.
I've posted it on the wInsight Resources page of www.earnedvalue.biz, or you can write me and request a copy by e-mail.

Once you've copied this report into your C:\CSSI\winst directory, open wInsight. Create a link to this report by clicking Reports, Custom Reports, More Reports. Click New, Edit, and then type in the name. Click Browse to search your directory, select the file, and click Open, then OK. This report will now show up in your list.