I wrote a collection update function by adding the code as jsw-File in the Backend. Then I tested the function by calling it in the page onLoad function. Everything worked fine - there were no errors shown in the console. Then I added the function (function defined as export and setting the wixDataOptions to true) to the jobs.config and set only a time for daily processing. But the job is not called - if I test it in the pages onLoad everything works fine.
Any suggestions for this behaviour are highly appreciated!