You may have noticed that when you try to save over top of your previous sketchup export that it opens the folder as opposed to saving.  There is a pretty simple work around, add “.py” to the name of your export.  For example

if I want to overwrite the KevinTest2 export, I simply type “KevinTest2.py” into the dialogue box.  This helps from needing to make lots of export folders and constantly changing launch locations.