Update
Select this option to update the metadata and/or the doc folder content of the current repository whenever a file is attached to the form. After pressing Save/Check ou Save/Exit, the metadata will be updated according to the content of this form, and/or the doc folder content of the current repository will be updated according to the attached file or the files contained in the attached ZIP archive file. If any of these files exists in this folder then it is overwritten, otherwise it is added.

Remove before Update
Select this option to do everything the Update option does, and beyond that, to remove all the files previously uploaded in the doc folder (removal only occurs if some files are presently attached to the form). After pressing Save/Check ou Save/Exit, the doc folder content of the current repository will consist of just the attached file or the files contained in the attached ZIP archive file.