conversation mode: reintegration of sent messages

From previous experiences, with other mail programs, I mode the answer I do from “sent” to “received”: it was helpful to keep conversations in time in the list.
With EMClient when I do so, the conversation stays in position at the last received message (which can be yesterday or before) instead of moving up to today as I placed an answer.
It is a known behaviour? Is it a defined behaviour? Is is a specific behaviour I’d like to have?

Are the conversations in a different order in the Sent folder than in the Inbox?