Automagic Forum

I don't see an action for this, but I would like to have a flow empty the clipboard. Preferably leaving the locked items.

Just use Action Copy Text to Clipboard and leave the Text field blank. When executed, it will replace the clipboard with blank/empty content (nothing).

Action Copy Text to Clipboard with blank text does not affect the clipboard in any way.

Try to put a text there, like "Hello". Does it change the clipboard? Or you can use script to assign a blank value, then use this as the text. then in text field put
{blank}