SCRIPT LOGIC Behavior for INC accounts

I have a simple script logic created  (BPC 7.5 NW)  to copy some data from one category to another.

*WHEN TIME

*IS 2013.NOV

*WHEN CATEGORY

*IS BUDGET

*BEGIN

*REC(FACTOR=1, SCENARIO="FORECAST")

*END

*ENDWHEN

*ENDWHEN

Surprisingly it copies data fine for an EXP account but for an INC account it is coping with the sigh flipped. This is not consistent with whatever I have worked so far. Any thoughts?

As we are doing a script level read and write - sign should be same for new record same as source record. What am i missing?

-S