I know this ticket may be duplicated,
As it's say to the title, you can't update a marketplace texture pack, I didn't tried on other platform.
The only way to fix it is to delete the texture pack and download the texture pack, for more detail this is the content that I wished update:
Type: Texture Pack
Author: Minecraft
Name: Nature
Update: For 1.14.60
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Comments
[Mod] OcelotOnesie
migrated
Thank you for your report!
We're actually already tracking this issue at MCPE-57377, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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