Dropbox camera upload wrong file name

I often take pictures with a mobile phone A and send them via Bluetooth to mobile phone B. On mobile phone B, I move the pictures to the album gallery, such that these pictures are uploaded to my dropbox automatically with dropbox camera upload. Sometimes, when I do this, the file names of the pictures in my dropbox are incorrect. For example, if I take a picture on 08.05.2022, 11.01.08, then the file name on both devices is IMG_20220508_110108. I sent the file via Bluetooth on 09.05.2022, 10.49.33 and the filename of the picture in my dropbox is 2022-05-09 10.49.33, i.e., the date when the file was sent via Bluetooth. Also, on mobile B in the photo app, the respective picture does appear at 08.05., but at the end, i.e., not sorted correctly. How does this happen and how can I avoid this?