Maybe the
MA2 behaves differently from every drone, DSLR, point & shoot camera and phone camera I have taken images with ........but.........with the mini and the fly app the attached is what I see.
The first attachment shows the numbers continuing in the original sequence when a brand new card is inserted in the mini. In the second attachment you can see that the naming continued from where it had reached when recording images on the new card when the old card was put bad in the mini.
Likewise, every drone, DSLR, point & shoot camera and phone camera I have taken images with behaves/behaved as shown, i.e. in 'contiuous mode', whether that is the only naming mode available or the default mode or the selected mode, the camera records the new image with a name whose number is equal to the number of the previous image...... +1..... UNLESS there is an image on the memory card, in the relevant folder, with a number in its name that is higher than the existing 'counter' number of the camera.
Yes the camera obviously checks the names of images in the relevant folder on the memory card and changes its naming scheme accordingly if that is required but it increases the nu.
I have fallen foul of the latter on a couple of occasions when I have put the wrong card in the camera and the "wrong" card contained a higher numbered image.