AppSense Environment Manager - quickest way to migrate reg data from MS Office app group into Session Data

Hi, we have a hundred users in our Citrix XenApp 6 environment and they all have AppSense Environemnt Manager profiles.  When setting up the config of EM many months ago, I mistakenly put the reg key for Outlook profiles, i.e.

HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem

into my 'Microsoft Office' application group, rather than putting it into Session Data.  The effect of this is that other programs (anything that has a "send as email" option) cannot find the mail profile, and so doesn't work properly.  I've tested putting this into Session Data and it works.  I should have read the manual at the beginning, because it says this about Outlook in there.

Anyway, I now have a hundred users when their 'Windows Messaging Sybsystem' data is in an app group 'Microsoft Office' where it should be in 'Session Data'.

Do you know if there's a quick way of migrating this reg key from one to another, for all users?  I can do it for one quite easily using reg export/import, but doing this for 100 users would be a nightmare.

I was looking at using the EMP Registry Utility

EXPORT <user> <group> <app> <key> <file>
then
IMPORT <user> <group> <app> <file>

but I don't know if I can use 'Session Data' in the <app> place.  Also, I don't know how I can script it to work for all users in AppSense, or all users inside a certain AD group.

Any help would be appreciated.  Thanks.