Comment 1 for bug 1673004

As there seems to be no real "action" related to this bug, I post "a workaround":

Comming from Ubuntu 18.04 I found a nice solution for Nemo & Deja-Dup:
Copy /usr/share/nemo/actions/sample.nemo_action to ~/.local/share/nemo, rename it the way you like and follow the inline-instrutions with "Exec=deja-dup --restore-missing %F". This will bring you the desired menu-integration.

Of course copying the sample in the original folder and modifying it (with root/sudo) brings the same result but to all users on the computer.