Situation: With some reasons you ale loosing your .met files - but you still have your xxx.part file (for example even 99% downloaded).
To resume your download you need to create .met file based on existing xxx.part and ed2k link which you can find easly manual using searching

.
This "feature" i am asking for should look through your xxx.part file, find zero values, ask about ed2k link, create xxx.met file and resume download.
I know that there can be possibility to create fake files that can make a mess in network, but none of this happend when we won't let upload such files. (only download allowed)
(Sorry - my english is not god )