link into an overlay
When you add a link in an overlay which goes to another artboard with a transition, the link behavior is always reset to an overlay even after you saved.
Each time you will reopen your prototype, it will come back to an overlay link.
I think what you’re seeing is that once you wire an artboard and set to ‘Overlay’ the subsequent artboard wire HUD will remain in overlay. If this is what you’re seeing, it’s expected. The dialog will retain the last setting used.
If there’s something else going on, detailed summary of what you’re trying to accomplish and where its not working as you think it should be very helpful.