Can I transfer pinning state between Extension Points

Question

Hi! I am trying to achieve the following scenario.
I have the taskpane with my office Add-In open in Read state, with Pinnning active. I want the user to be able to hit Reply on the email they are currently reading, thus transferring to Compose state, and have the Compose extension point taskpane open automatically.
I think this could be achieved by transferring the pinning state from the Read Extension Point to the Compose Extension Point, but any way this scenario could be achieved would be great.

Also, as a side note, when closing the taskpane, the pinning state selected by the user before it lost. Any chance the pinning state could persist somehow when the add-in is opened the next time?

Thank you!