Idle & V.S.S. Question

I want to know if this is purpose for the VSS besides cruise control.

I swithed from a C3W automatic ECM to an A9L manual ECM. after the switch, I had a code #29. This code never showed with the C3W ECM. I did not have my VSS connected @ the time, So I reconnected the VSS and eliminated the code 29 but now when I am coming to a rollling stop, I push in the clutch and the idle will remain high till I come to a complete stop.

I believe this is to keep the motor from stalling when the clutch is first pushed in when in motion? My question is, Is this common with all manual ECU cars?

It is kind of annoying but if it is a common thing I guess I can live with it or disconnect the VSS and have a code 29 again.

Any input would be appreciated!

I thought I had read something in an earlier post about the "dreaded VSS idle" So If it is normal, I'll say it's all good. It's better than having the motor die every time the Clutch is pushed in coming to a stop.