SDM unapply support stack and deploy lower sps

Our portal sits on nw2004s java stack only (700 and support stack 11). Would like to rollback sps 11 and apply sps 10 so that it matches our BW ABAP support stack level. Is this possible to rollback the java stack support stack level?

The thought is to use SDM to undeploy all components, select all sps 10 components (SCA's) and deploy.

Would appreciate any comments in regards to this, is this the corrrect procedure or even possible?