MST and Rapid PVST

[ALIAOF_]

I have a scenario shown in attached picture.  What I am looking to do is the following:

1- Move VLAN200 from the router to the switch running Rapid PVST

2- Add a new VLAN/SVI to switch running Rapid PVST and extend it to upstream switches running MST

My question is if I do that will it cause a network outage or outage on that specific VLAN? 

NOTE:  I did have an issue when I added VLAN 200 that is on the router to the Switch Running Rapid PVST's database.  But this time I'm actually moving the L3 from the Router to the Switch as well.

Thank you.

[Dennis Mink]

just out of curiosity, why are you running a mix of RPVST and MST?

[ALIAOF_]

Long story short my company acquired another company and they just started throwing Dell switches in without any planning and they are all running MST.  We are in the process to migrate away from all that but for now need to get this working before migration is done.

[Dennis Mink]

Have you seen this:

https://supportforums.cisco.com/discussion/10108011/mst-pvst-interoperability