bfsave in Bio-Formats matlab library saves an incorrect BitDepth information

[yuminguw]

When using "bfsave" to split channels or timepoints, the resulted images of separate channels or timepoints have a BitDepth that is different from the original image. This error can be reproduced in Bio-Formats MATLAB importer and exporter GUI by following steps:
(1) Import a multi-channel image of 8-bit or 16-bit image.

(2) Choose "Each Channel" in the "Export" panel and then click "Save"

(2) Click the "Individual Image" to import the saved image in step (2)

The OME-XML metadata shows that SignificantBits="64"