Connect mirror to connect board column

On Board One I have a connect column called Types in which a drop down displays for the approved selections. (i.e. Type A, B etc). There are no mirrors on that board.

On Board Two I have created a connect board column to Board One, and then created a mirror column from that Board. I want to mirror the column called types. That column shows as an option when I create the mirror. However, the content (e.g. - Type A) does not show on Board two.

Is there a rule that says one cannot mirror a connect board column? If so, does anyone have a suggestion for a work-around?

Thanks
Sue

Hey!
You can use Unlimited Mirror Column App, this allow you to mirror the connected boards also.

Best,