Nothing? Can you double-check in here: %AppData%\..\Local\Microsoft\Power Automate Desktop\Console\Workspace
It probably doesn't matter for what you're doing, have you checked each Environment? Do you have access to the flow through the Desktop app?
To answer the original question more directly: once you have found the flows through the PAD app, a good way to 'copy' the flow is to go to edit mode, then Select All (Ctrl-A) and Copy (Ctrl-C) the flow, then Paste (Ctrl-V) the contents to a blank text document. You can then save the text document wherever you want. This will bring all of the UI elements across as well. Note: sub-flows will need to be copied separately to their own file.
To recreate the flow in a different machine, copy all of the text from the saved file into a new blank flow.
