Paul Mantz

solved it for PC Players!
Export the World, load it in 7Zip, open File “World Resource Packs” Go in MC Bedrock in your World to the Resource Packs Folder, click on the !, Go to the json File again, delete the Part with the same Pack ID, then do the Same for the Behavior Packs, then import the World again. THen you´re all set
I hope I can help with this

With Code I mean Pack ID

I solved it for PC Players!
Export the World, load it in 7Zip, open File “World Resource Packs” Go in MC Bedrock in your World to the Resource Packs Folder, click on the !, Go to the json File again, delete the Part with the same Code, then do the Same for the Behavior Packs, then import the World again. THen you´re all set
I hope I can help with this