Hello Martin,

> Any chances for a fix to this in the next days?

Sorry for the delay.

The patch we had so far for this had several problems:

- It sometimes failed to collect file marks because it did that when the
  buffer had already been modified.

- It failed to restore the marks of files that couldn't be renamed
  (e.g. in read-only dirs)

- It didn't propagate the name changes to other dired buffers

I created a new fix that should take care of these problems.  I wanted
to make some more sanity tests today, unfortunately I'm ill and don't
feel well.  I'll try to do this tomorrow.

So, this is the new patch: