Merge threads redirect to go the the top of the newer thread, not the older one.

[XFdestek]

When I merge thread A (newer thread) into thread B (older thread) I want thread A’s redirect to go the the first post of thread A within the merged thread. But it doesn’t, the redirect goes to the top of the merged thread, ie the first post of what was thread B.

Is there any way to have the redirect go to what was the OP of A?

Hope that makes sense, thanks for any solutions.