InDesign is constantly losing image links

[Thomas263672040zqd]

My InDesign will not keep links to some images.  I am using InDesign to create catalogues and often have 1,000 images.   I am using Winodws 10.  All of the images are saved on a network drive with a mapped drive letter.  The locations of the images do not change and they are not edited in any way while my InDesign document is closed.   But when I reopen, I find some or sometimes all of the images have lost their links and I have to relink them all again to the exact same path/location. 

[Peter Spier]

Where are these images stored?

[Thomas263672040zqd]

They are stored in Amazon S3 cloud.   Drive mapping is done using TNTDrive

[Willi Adelberger]

Is the network drive connected to a cloud service like dropbox?

[Thomas263672040zqd]

They are connected to AWS S3 cloud.   There is a 3rd party app called TNTDrive which maps the drive