I added my cronjobs to /usr/local/config/config.xml like this
<add_backup
<item id=“1”
<method 3</method
<1></1
<2></2
<3></3
<4></4
<5>*</5
<run usb_backup -a Filmy -c jobrun</run
</item
</add_backup
it persists even over restart
edit: I can’t insert the code here, there are missing > after each line