Lillypad USB and IDE problems

I'm using a board flashed with the Lillypad USB bootloader running at 8Mhz and 3.3v. It all works fine but every time I download new code the IDE will deselect the USB port and not reselect it - It means that every time I want to compile and download I first have to go into the 'Tools' and 'Port' menu and reselect the lillypadUSB port (It is correctly listed there as a Lillypad USB on COMM14)

Is this normal behaviour?