Portal Custom Map Not Showing Assets

I have been having issues with my custom maps not loading any assets in "My Experiences." I have been able to create new HQs, player spawnpoints, vehicle spawn points, and vehicles (specifically the Vector and Glider96) that load in the map, but no other assets will load. Not trees, not AC units, not concrete floors or foundations. I have looked up posts on reddit with similar issues, and I've tried all their fixes to no avail, so I'm coming here hoping that I can get a fix.

In order to be complete, I'll list the steps in my latest test run and include screenshares.

1. Open Godot and load the Battlefield Portal Project.
2. Click the Portal Set up button
3. Open the MP_Abbasid scene
4. Save as MP_Cairo_Asset_Test
5. Verify that the MP_Abassid tab is selected for the Object Library and add an ACModule_01 adjacent to the TEAM_1_HQ point for easy reference.
6. Save the scene and close it. (I have seen some recommending closing the Godot environment completely, but I didn't.)
7. Re-open the scene, and now the MP_Cairo_Asset_Test scene is listed next to Export Current Level. Click Export Current Level.
8. Go to the Battlefield 6 Portal web editor.
9. Create the Cairo Racetrack experience. Leave all settings at default.
10. Go to Map Rotation, select Siege of Cairo, and Upload the custom .json file that I exported in step 7. 
11. Save and publish the experience.
12. Wait 10-30 minutes.
13. Enter Battlefield 6, navigate to My Experiences and host my custom Cairo Racetrack map.
14. Upon entering, I spawn at TEAM1_HQ, but there is no ACModule_01 asset in game.

To be clear I have tried variations of this test multiple times with different maps and different assets. Other than spawnpoints and vehicles, I have not had any other assets load in the custom maps.