Clearing Map But Saving Models

[gamecreator]

Say I have models preloaded like so:

preload[0]->Model::Load("player1.mdl");
preload[1]->Model::Load("player2.mdl");
preload[2]->Model::Load("enemy1.mdl");
etc.

This would let me use the same models across multiple maps by keeping them in memory.  I then load a map and play the game.  Everything is fine.

However, when I want to change the map, I need to call world->Clear() but unfortunately that will also wipe the preloads.  How do I prevent this?  Do I call GCSuspend then Clear then reload all the preloads (which, in theory, should be fast since they're already in memory)?  Is there a better way to do this?

[gamecreator]

Seems like this may be the solution: https://www.leadwerks.com/community/topic/17054-change-map-replace-old-map-with-new-map/?do=findComment&comment=111215