Corrupting/No progress Saved in Adobe Animate

Hello All, 

Recently, a group of people I am working with have run into an issue where we are working with our files over the period of 2-4 hours and we have been saving constantly in between that time until we determine that the file is finished. The file indicates that there is a save change being made And the date modified is also changing to the correct time. However, when we go back to the file, or pass it along to someone else in the process, all of the changes that were made are lost/corrupted as if the save reiterates itself back to a previous version resulting in the loss of a few hours of work. 

Does anyone know of a fix for this or what might be causing it? Or even a way to confirm that there is a save happening other than the modified date on the file change.