Packaging assets as IO Store (utoc ucas)

To pak files as UCAS/UTOC:

Note the screenshots are from another game and your uproject will be named "Phoenix".

Create a new uproject named phoenix and point it at your 4.27.2 install, or use the custom uproject and custom engine.

In the project settings, make sure the following 3 options are selected.

Under editor settings, make sure the following setting is selected.

Import your mesh as normal, dummying the materials where necessary in the game files and original structure.

For any files that you want to include in your pak, right click, asset actions, assign to chunk.

Enter any chunk number greater than 8.

Save All.

Ensure your build configuration is dev or shipping.

Select File -> Package Project -> Windows 64 Bit and select a folder.

After packaging completes, navigate to the folder you selected, and the path \WindowsNoEditor\Phoenix\Content\Paks.

Find the pak, ucas and utoc that match the chunk number you provided earlier.

Rename those 3 files to the same name, all ending in _P, for example zTestMod_P

That's it, test it out in game.