I have a customer who is using SLA who wishes to Blind Transfer a call after a conference has been built and has reduced to two parties.  I have used uuid_bridge to "unconference".  This action breaks any further SLA on the call, even though the lines are lit.  Any other phone that tries to Barge in gets put into a single channel conference. The phone that had quit the conference fails on subsequent Barge attempts to the original call but can connect into a conference with the other phones if they have built  the single channel.

What I am asking is there a better way to accomplish this without breaking SLA ?   I am basically trying to put the call back into the state it was in before the first SLA conference was built.