As you are not using XPE, I have moved this thread to the CE section.
The way to go is, configure one client with the additional ICA connection.
Now use Rapport(WDM) to pull the configuration. Check everything beside ICA (remember, checking a box in the pull process means to exclude that section from pulling). Also choose “Append” when asked.
After that you can push that package back the remaining 99 units.
CG