The MacBook and monitor behave impeccably during use. But, when I finish using them I have tried pulling out the usb connection and I have tried powering off the docking station once I have closed the lid - to remove the power supply to the MacBook.
Either way, when I reconnect the power the MacBook detects the monitor and reconnects. But, it then disconnects. This is repeated a variable number of times. Eventually, it decides to reconnect and all is well.
So I have yet to figure out how put the MacBook to sleep and then wake it without watching this process.
Total power off or restart of the MacBook is fine, it is just shutting the lid and removing power that causes an issue.