Mass Change from Non-Deprecible to Depreciable?

Hi All-

We have about 16,000 assets that we had been leasing for some time, so they existed in our Asset system, but they were configured as non-depreciable. We recently purchased them, so we'd like to update that flag for those assets, however, we haven't been able to identify a streamlined way for doing this. There's no mass update option for making this change.

One thing we tried was using mass transfer to re-classify a group of the assets to an asset category that is depreciable, however, after making the re-class, the individual assets were still flagged as non-depreciable. Looking at the info on Metalink, this appears to be the intended functionality.