206 CC ceiling opening way

hello I have a question for information,
Are there any problems when CCs abandon the process during the ceiling opening, or what might be the problems waiting for us?
Do not leave the "middle position" button in the service booklet before the ceiling is fully opened or closed. Do you have any experience or knowledge in this regard?

absolutely no problem. It is a routine thing I have been doing for years for cleaning purposes, even leave the button in the middle, if the slip is self-abduction, there is a problem. it must remain firmly stable.