XF 2.1 Easier way to combine multiple forums to a new forum?

[kkarki]

I've forums X, Y, Z and I want to move all threads of this forums to A forum. Following would be enough...??

update xf_thread set node_id = new_id WHERE node_id = old_id

Or do I have to go through front-end and compulsary use the "move threads" feature??

I've millions of threads and I am afraid it would long hours and hours!

 

[Kirby]

If you now what you're doing ths update should be fine but you'd need to rebuild forum information afterwards to reflect the new counters / last post info.
(Meaning: I am always doing this when dealing with really large amounts of threads, using the GUI takes forever and a day )