[KevinH]

I do not think that would work. The files inside META-INF aside from the container.xml and font obfuscation encryption xml are supposed to be left alone.

In fact in BookBrowser the move command strictly enforces no destination inside META-INF. It does this because the Move command means that the opf manifest and all files must have all links walked and possibly changed as a result of a Move. So files not listed in the manifest should not be moved by the Sigil Move command.

Have you tried writing a plugin to move those files?