Image Sequence Command changes order of Maximum Intensity Projection TIFFs


I’d like to export single TIFFs of two channels and 1703 time points in a maximum intensity projection file. I’ve tried doing this using the File----Save as----Image sequence command. When I do this, 2000 single TIFFS are saved (rather than the expected 3406 (1703 time points * 2 channels)). The order of the files is also wrong. For example, the exported TIFF, t001, looks like t1001 of the original MaxIP (rather than t001 of the original MaxIP)

The files export correctly when I save the first 1000 timepoints of the Maximum Intensity Projection as a separate file and then use the File----Save as----Image sequence command.

Any ideas on how to correct this?