Bugs

When using a lookup to populate e.g. a custom label with data from a spreadsheet, DFW will add values to the custom label even when there is no match in the spreadsheet. I would expect it to do nothing when there is no match. Example: when matching on ID, it will add the ID if it doesn't find any value in the spreadsheet. So, it is necessary to remove these IDs again via another rule - see screenshots

Not possible to search in fields with sub fields e.g. Google Shopping feed 'shipping' field. Example: {"country":"DK","price":"39"} Neither the entire string nor parts of it can be matched to values in feed positive or negative E.g. how to find products where shipping cost is less than some value?

Example: ^.{0,10}$ This will match anything no matter if the string has more than 10 characters. This makes DFW useless for fixing problems where e.g. the description is too short etc

Example: ^[A-Z0-9\s\/\.\,\;\:\-\_]+$ The pattern above will erroneously match strings even when they contain lowercase letters. This makes DFW useless for tasks such as fixing casing problems in titles and descriptions.