Re-inviting users to a conversation they left

[Power Flotzo]

So another user left a conversation a while ago, and now they want to be invited back to the topic. Is it possible to do this, or do I need to create a new conversation?

 

[Power Flotzo]

Update: Tested this with Perch (see image below)...

...and apparently it works. Maybe it's because the conversation in question has reached its maximum amount of participants (26, the host plus 25 guests).