So, I took copied over an existing level in DE2 and made changes to it. One of the changes I made was shrinking the overall size of the level by moving and deleting walls. The existing floor remains even though the outlining wall is now gone. I've tried erasing the terrain and anything else I can imagine, but I just can't get rid of it.
Any help would appreciated!
Image to help better illustrate the issue:
[img:left]https://imgur.com/a/HvE9Y[/img]