InfoPath property promotion (field association) problem

Just experienced the following problem today - spend a couple hours on figuring it out: I have a full-trusted infoPath form that is allready published and working. There were a few form properties/fields associated with the fields/columns in the SharePoint. I have tried adding a few additional - but it didn't work. The fields were there, the values were inside of the InfoPath form, but they were not carried over to SharePoint. It looks like you need to reactivate (deactivate first and activate again) this form for the site collection from the Central Admin in order for those associations to be refreshed.