When EmptyWrapPath=Yes, provided WrapPath does not point to the project folder, Mif2Go deletes the entire contents of the WrapPath folder before copying files. However, if either of the following is true, Mif2Go does not delete anything, regardless of the value of EmptyWrapPath:
For HTML output types, if WrapPath points to the same folder as [Graphics]GraphPath, Mif2Go does not delete files unless both EmptyWrapPath and EmptyGraphPath are set to Yes; see §33.5 .
When EmptyWrapPath=No, Mif2Go leaves the prior contents of the WrapPath folder in place. Orphaned and obsolete files from previous conversion runs could accumulate and find their way into current deliverables. For this reason, it is better to designate a folder for WrapPath that is different from the project folder, and set EmptyWrapPath=Yes; that way nothing important is lost, and nothing unwanted is delivered.
See §33.8 .