Facebook: deleting conversations to get out of the other folder?

[Daniel]

I made the mistake to write someone on facebook before adding that person as friends. Now the friends request got accepted, but my conversation seen to be still stuck in the "other" folder. Even if a write again, that conversation will still be burried in the "other" folder.

Does deleting the conversation and strating it again help? Writing on the wall, or commenting on pictures is not an option :/

Any ideas? Would appreciate it!