I have signed up for a free upgrade from Windows 7 to Windows 10. 

I have created many important WMM 'holiday' projects in Version 2012 (Build 16.4.3528.0331) that are currently saved to my computer and are opened in WMM when I require to view them. 

The projects, which are coincidentally backed up to a separate hard drive, are a mixture of stills and AVCHD, with the latter converted to MP4;  I found that the quality of the playback is superior than burning the projects to DVD.

Will I be able to play back these important projects in whatever version of WMM is relevant and available to Windows 10.

I don't pretend to be an expert in this area, so be patient with your response and 'keep it simple' if possible.