How do I update Lightroom metadata after using ExifTool without wiping my edits?

Question

I had to change the date/time of my photos to + 3.5 hours with ExifTool because Lightroom didn't allow me to input half an hour…I was using "exiftool -AllDates+=3.5" which is working nicely but Lightroom doesn't care about my changes and still shows me the old capture time.If I read the metadata from the file, Lightroom replaces ALL information (incl. everything I did in the develop module) and that's not what I want.Is there some easy way to get the new capture time without resetting everything?Lightroom 2015.2.1 on Mac.

Answer 1

This is an extremely late reply but what should work is to first SAVE the metadata to the file(s), from Lightroom, which will include all your edits (among the few things that are not included are the pick/reject flags so if you use those, you could use a color label instead, or create a temporary keyword). Then use EXIFTool to adjust the time, and last not least read the data from the files again.