please delete

[baltowolflover]

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[ArcticGalaxy]

I'm not an expert on map making at all, so I may be completely wrong when I say all of this. xD
But did you make sure you saved your map correctly? I would double check that first.

[G4RG0YLE]

Make sure that you've saved the map correctly, and that the files are in the right place. Might be wrong, but it's all I know about maps unfortunately.

[Hakumi]

Adding on ( because I'm a newbie when it comes to mapmaking ) but are you clicking 'save' instead of 'export'?
And if that doesn't work, you can go to your export folder ( because that's usually where the objects be hiding in ) and copy the object, go to media > objects > my_objects. Sometimes it works and other times it might not.

[Kynvuu]

If you're visiting your map in-game before you have exported it, then that might be the problem. Sometimes it messes things up when you go in-game without exporting it. Try exporting it first and see if that works. c:

[greenart6]

Try moving the object into a different object group. Sometimes this glitch happens with older object groups, but just making a brand new object group might fix it. However, you'll still have to re-place all of that certain mesh using in the one in the new object group. Hope this helps!

[baltowolflover]

Ahh. Thanks everyone!
I'll try all of your advice and see if it helps. ;v;