Hey there! It sounds like you have some interesting experience with modding Final Fantasy VII world textures. Here's how things might have changed with 7th Heaven:
Packing is likely needed now: While you might have gotten away with loose textures before, 7th Heaven probably requires packing the edited textures back into the .lgp format for the game to recognize them.
Dedicated tools: 7th Heaven might have its own tools or recommend specific tools for packing textures. Check the 7th Heaven documentation or forums for details.
Here's how you can move forward:
7th Heaven Documentation: Look for guides or tutorials specifically related to texture modding with 7th Heaven. They should explain the recommended tools and packing process.
Community Resources: Check out 7th Heaven forums or communities. Someone else might have a solution for using loose textures, or offer alternative packing tools.
Old method exploration: If you remember the tools you used before, try searching for them again. However, relying on outdated tools might not be as reliable or secure.
Here are some additional resources that might be helpful:
7th Heaven Website:
https://7thheaven.rocks/ (They might have a forum section)
FF7 Modding Community:
https://www.nexusmods.com/finalfantasy7remakeGood luck getting those custom textures back in the game!