Imported Minecraft world "Imported" text can't be deleted & also Quantifies

The name of my world is “Shaun SP”. I exported it with that name.

When I imported the name looks like the second screenshot.

I can’t edit the text or delete all of it because it exceeds text character limit in-game and therefore allows no edits. The game also does not recognize the “file name” text as the name when I import and instead just keeps adding “imported' over and over and over again to the point the file name is impossibly long.

Please fix asap. Tysvm!