Unicode isn't supported and is converted into Ansi text, Leave the filenames exactly as seen in FlashFXP and everything should be ok.
It would appear that you have found a limitation of the new transfer queue design in v3. We did our best to insure backwards compatiblity but it appears that this limitation slipped through the cracks.
At the moment there is no way to solve this problem when working with
ftp:// formatted hosts. I will try to find a solution but the outcome looks grim.
One alternative would be to generate the queue using a pre-existing site in the site manager. you would replace the
ftp:// url with the site manager entry name as seen in the FlashFXP.ini A quick connect site entry would not be suited for this purpose and would not work properly.