Credits and Titles Removed

Hi,

Wondering if anyone can help me here?

I have worked on several independent titles in the past which have, until recently, all been listed on IMDb with credits for all of the cast and crew who worked on each picture.

It was brought to my attention a couple of weeks ago that some of the credits for these titles had suddenly disappeared, without any changes being made by me or my colleagues.
So I am in the process of trying to re-submit the credits so the people who worked on these productions can be credited accordingly again.

However, one of the titles - 'CONTROL' - which was only released earlier this year - has been removed completely now.

The link WAS at https://www.imdb.com/title/tt23952252/ 

Another title - 'TAKING CARE OF BUSINESS' has also been removed - https://www.imdb.com/title/tt5314780/ - Please can this also be restored?

'SUPERMAN: REQUIEM (2011) https://www.imdb.com/title/tt1667443/  is also missing.  Again, please can you help to get this restored?

Is anyone able to advise why these titles have been removed, please?

I can provide links (purchase links/title related articles) and credit files for each title if needed?

Please can anyone advise how this may have happened and whether these titles can all be restored, please?

Thanks for your help in advance.

Adam.