Good to know it’s more convenient for you and others to have the exported UI files of ‘ui’ folder directly in the sketch folder. But yes, SquareLine Studio 1.4.0 now deletes the contents of the UI folder selectively (leaving e.g. ui_events.c) before exporting the UI to ensure there are no residues left which could cause compile errors (I see your comments in the corresponding topic: SLS exports a deleted screen and breaks compilation ). The UI files are in the ‘ui’ folder for a reason, not to coincide with your project files using them. Probably there’s a way to determine for sure which files are residues of deleted screens/etc. and which are your own code, but in SquareLine Studio there doesn’t seem to be a handling for this scenario currently. Anyway, thanks for the feedback, this feature request gives a material for further discussions.