2.19.0.1 migration change dds texture setting unchanged to false

[Lales.Charles]

Hi,

We just observed that data (manual then editor opened) migration 2.18.1 -> 2.19.0.1 changed the dds textures setting unchanged to false.
Required manual intervention and reimport to fix it.
Impacted masks defining vegetation hidden on specific areas..

Regards,
Charles

[silent]

Hi Charles,

We are transitioning to a single runtime format for textures (*.texture) instead of using *.dds. The migration process was likely designed to bypass correctly compressed DDS files and instead compress RGB/RGBA DDS files. However, we overlooked the fact that uncompressed textures may sometimes be used as masks. In such cases, you will need to re-enable the unchanged flag after the migration. 

It should no longer reset if you set this flag in version 2.19.

Thanks!