Fermi Software Distribution » ups

I have setup my shell environment in two different manners and the results are very different from my expectations. Here is my assumption:

If I source the setup or setups or setups.sh script for a UPS product area, I assume that the products installed in that area will be available for setup in the shell where the script was sourced.

But for /grid/fermiapp/products/common this is not the case and here is the example where I discovered this:

<lariatgpvm01.fnal.gov> source /grid/fermiapp/products/larsoft/setup
<lariatgpvm01.fnal.gov> echo $PRODUCTS
/grid/fermiapp/products/larsoft
<lariatgpvm01.fnal.gov> source /grid/fermiapp/products/common/etc/setup
<lariatgpvm01.fnal.gov> echo $PRODUCTS
/grid/fermiapp/products/larsoft

Where as if I source the setup scripts in the opposite order, I see both product areas:

<lariatgpvm01.fnal.gov> source /grid/fermiapp/products/common/etc/setup
<lariatgpvm01.fnal.gov> echo $PRODUCTS
/grid/fermiapp/products/common/db
<lariatgpvm01.fnal.gov> source /grid/fermiapp/products/larsoft/setup
<lariatgpvm01.fnal.gov> echo $PRODUCTS
/grid/fermiapp/products/larsoft:/grid/fermiapp/products/common/db

The fact that the /grid/fermiapp/products/common isn't part of the PRODUCTS variable is completely unexpected and I believe inconsistent with both documentation and socialized education of users. This either needs to be fixed or at a bare minimum, there should be notification that the PRODUCT variable wasn't modified by the setup script in /grid/fermiapp/products/common/etc