Importing files on Android for MCPE 1.19

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We're tracking this issue in MCPE-140165, so this ticket is being resolved and linked as a duplicate.

That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.

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Ok. But how can I fix the issue

Ok but how do I fix it

@unknown on the linked ticket:

What you can do is to use a file explorer that supports the file extensions and import the files that way, like a CX File Explorer.