Ungo MS2000 and Bulldog rs

I have a 1990 Jeep cherokee with a older Ungo MS2000 alarm. I am going to be installing a Bulldog remote starter on the vehicle and attempt to use the ungo for controlling the unit.  I am planning on using the 3rd button/auxillary output on the Ungo alarm remote for the starter function. My questions is with this setup will i be able able to RS the vehicle and leave the doors locked, or will the alarm contiue to dIsarm silently  as it does now?  having the alarm armed durting the RS run time is not important to me but having the doors locked would be a nice feature to have.  If you have any input on this or have run into this before any help would be appreciated before i get started on my little project next weekend.  Thanks in advance

Bump: any help ??