So, hearing nothing, I just tried to do the 1.5TB import. It did not seem to automatically resolve the conflicts. This is disappointing.
The import appears to have created a train wreck. Some images didn't import, some didn't copy or import, many paths appear to be broken, etc.
The import appears to have created a train wreck.
Sadly, this doesn't surprise me. The system requirements for LR require that it be installed on a case-insensitive file system but don't say anything about case sensitivity of volumes storing catalogs or photos. However, LR has a number of longstanding reported issues handling filename case and is inconsistent in how it handles case.
Last I heard, Adobe's advocated position for Lightroom was that photographers should endeavor to have a single catalog. I have been using Lightroom since 1.0, and having a single catalog has not been practical, but I am now trying to unify everything (to make searching, etc. easier). It's a royal pain. Adobe's tools should be much, much more sophisticated for migrating catalogs together, such as:
- deep inspection of image data to identify duplicates (not just relying on a file hash or metadata),
- being able to track metadata deltas independently of actual image data (so shallow, metadata changes do not mandate multiple copies of the image)
- being able to gracefully migrate from case-sensitive to case-insensitive filesystems
- more sophisticated searching mechanisms (such as facial recognition like iPhoto had)
- automatically being able to find assets, post migration (it looks like I may need to do a lot of this manually now) :-(
The current situation is a very poor experience when there are multiple catalogs, case sensitivity issues on filesystems, duplicate images, etc.
You might consider posting this at Adobe's official feedback forum: Recently active topics in Photoshop Family about Photoshop Lightroom. This forum is a user-to-user forum that Adobe infrequently monitors.