Structure loading prioritization (addon vs. leveldb cache)

Partner Rank: 3 - Normal
 
Verification Builds: Stable 1.20.51 & Preview 1.20.60.23
 
Regression Builds: Unknown/None
 
Summary: Structure loading prioritization (addon vs. leveldb cache)
 
Affects currently Live Content: No
 
Impact: We are using the /structure load & /structure save commands as a core-mechanic of our redstone-based game. The current prioritisation of addon over leveldb cache means players are unable to dynamically override base structures while playing the game
 
Repro Steps:

1. Create a new world
2. Create a simple structure & export it into a behaviour pack structures/bug/test.mcstructure
3. Link your new world to the new behaviour pack & load back in
4. Load in your structure with /structure load bug:test <dest>
5. Make modification too your simple structure
6. Save your modified structure with /structure save bug:test <from> <to>
7. Before reloading the world, verify your modified structure is in the leveldb cache by loading it again. /structure load bug:test <dest>
8. Once verified, reload the world
9. Load in your structure again /structure load bug:test <dest>
10. Notice that it has been reverted back to the Addon's structure, and your modifications have been deleted

 
Observed Results: The leveldb cache is deleted upon world reload, and the addon's base version of the structure is used instead
 
Expected Results: The leveldb cached structure is saved & immutable across world reloads, and should be deleted via `/structure delete` to then use the addon's base version again
 
Screenshots/Videos attached: Yes, sent to Greg Walls via Compass
 
Notes:

• We have a default structure for each level saved in our Addon called lvl1:save1, and allow players to save over this slot via /structure save lvl1:save1 (i.e. saving it to the leveldb cache). Upon reloading the world, lvl1:save1 will be reverted to the Addon's version, deleting the leveldb cached version. (and therefore deleting their saved content)
• I think that the leveldb cache should have priority over the addon, as the addon serves as the base experience, and the world then evolves as the player's experience unfolds.