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Creating a map editor in blueprints

Hello!
I like to create a map editor for a 2d turn based strategy game in unreal engine 4 using only blueprints.
My biggest concern is that I didn’t find any way to save/create/delete an umap file with bp.
Is there a way to do this?

The workaround is not storing the umap itself. Just store the object IDs and transforms. You can probably do this in C++ if you really need to have the umap.

Thanks the info.