image & viewport problems

The following are significant problems I'm having with Ver 2.2.0016 (I had to jump back to 2.2.0016 from 2.2.0019 due to printing problems). I'm working on a large project using 50 viewports and about 30 very large images and have had to write lisp routines to work around these bugs which execute very slowly.- Icad will not save image transparency or draw order.- Icad will not save viewport on/off settings.- Icad will not freeze a viewport if it's layer is frozen or turned off.