We've been seeing an error with reports when we attempt to run them using the scheduler/watch folder that otherwise work fine when refreshed manually and published manually.

Basically it seems to think there are fields missing when it comes to publish later in the flow.
Two of the fields aren't there as they are deleted further up in the flow however Keyword is a field present at the end.
There are no erroring formulas further up or warnings when run manually.

The error is pasted below:

Error publishing block "Data file output 9"

Detailed information

Invalid fields: Fields do not exist - cannot execute:

Date
Campaign name
Keyword


Is this a known bug or something I've failed to notice?
Any ideas/help would be appreciated.

I found I can rebuild the offending flow from scratch exactly as before and this seems to remove the error (although it appears from a different flow and publish block).
Obviously I want to avoid having to rebuild the entire report block by block.

I would assume the blocks retain a certain amount of past configuration information as if I change a flow higher up and then change it back later it remembers some aggregate settings etc.
Could this be the issue and is there a way of clearing past configurations?


Thanks

Simon