I need help with loading custom files into level editor.

[GoreGrinder99]

I have this problem where I can't get the level editor to save the files I have placed into my map. When I place an entity for example, I change the object to the desired object in my custom entities folder for my conversion and it loads properly but when I close the editor and re-open it the object is gone and I get an error.

How do I keep custom objects in my level editor for my maps without them vanishing?

I may not be clear enough above so I'll explain a little better. In my conversion folder I have an entities folder with entities I'd like to use for my conversion. When I open the editor and look for the entities they cannot be found and the only way I can use them is to change the entity file at the bottom of the general tab of the object. After selecting the desired entity I want to be used in my conversion from my entities folder from my conversion, I can save it and load the map and it works but as soon as I reload the editor the item cannot be found.

So how do I make the editor keep the entity or even better, how do I make the editor look for the files in my conversion folder instead of the original redist folder?

I'm mostly wanting to do this so I can use the flashlight and batteries for my light sources and change the torches/candles to lamps and other light fixtures and make the tinderboxes lightbulbs.