This feature team has been aware of this request, and it is under review.
An error occurred while saving the commentTonya Rodgers commented
Please implement this feature.
This continues to be on our backlog due to prioritization of other work items. We will update when there is more to share.
if you have an existing post that you want to show in a different channel, you can edit the message and cross-post. This will add the top-level post to the different channel, but will not include the full set of replies. We will keep this request in mind as we evolve the cross-posting feature in the future and update if the status changes.
Details on cross posting can be found here: https://support.office.com/article/cross-post-a-channel-conversation-in-teams-9c1252a3-67ef-498e-a7c1-dd7147b3d295.