On K-PACS 1.6, when importing a sequence of .bmp images (named image001.bmp, image002.bmp, ...), after converting to DICOM several images are lost. So if there are originally 70 images, the study in the database consists of only 45 images. I have verified that this bug does not occur on K-PACS 1.0.1.
Also, and this is more of an annoyance than a bug, when importing a group of images, if you use CTRL-A to select all files, the very first image gets mis-ordered and is placed at the end of the image series. If you use SHIFT-click, it works correctly.