Moving the refugees away is, in theory, a proposal that has no downside for either side of the conflict and could minimize casualties as much as possible.
However, such a proposal is always fraught with difficulties when it comes to implementation in reality.
First of all, whoever makes this humane proposal will suffer the consequences: whether it's humane or not, once you make the proposal, it's yours, and you must offer something to achieve the outcome. Greedy politicians will seize such a "point" to press their demands on the other side.
Therefore, political negotiations are a very distasteful affair, especially such negotiations. If the powers are balanced, then it is always the hard-hearted, soulless side that has the advantage and takes the initiative.