Changing EDT on an output format doesn't change the publication's file extension

Hi,

In TridionDocs 14 SP2 I changed the EDT of a PDF output format from pdf to zip but the new publications after this change still has pdf extensions in the filename even though the downloaded file is actually a zip. After renaming it from .pdf to .zip I managed to extract the published pdf.

Is there any way to fix this issue other than deleting/recreating the output on the publications? We have a lot of publications so the recreation would not be suitable option.

Thanks,

István