Actually it works. I use this already for a long time. Only thing that is a bit misleading is that the sequence does not show the selected filter for darks and bias. But it will change to the filter that was selected when the line was addes to the sequence. (maybe I am just making use of a bug, but it works)
Consider this example
Line 2 and 4 were added to the sequence with filter "Dark" (which obscures all light) selected. It shows as --
If you run the sequence it will switch to the "Dark" filter before taking the darks or bias captures
Also if you look at the saved sequence file it will show that it needs Dark filter (see type and filter lines)
<Job>
<Exposure>1</Exposure>
<Binning>
<X>1</X>
<Y>1</Y>
</Binning>
<Frame>
<X>0</X>
<Y>0</Y>
<W>1391</W>
<H>1039</H>
</Frame>
<Temperature force='false'>0</Temperature>
<Filter>Dark</Filter>
<Type>Dark</Type>
<Prefix>
<RawPrefix></RawPrefix>
<FilterEnabled>1</FilterEnabled>
<ExpEnabled>1</ExpEnabled>
<TimeStampEnabled>1</TimeStampEnabled>
</Prefix>
<Count>1</Count>
<Delay>0</Delay>
<FITSDirectory>/home/paul/Indi</FITSDirectory>
<UploadMode>0</UploadMode>
<FormatIndex>0</FormatIndex>
<Properties>
</Properties>
<Calibration>
<FlatSource>
<Type>Manual</Type>
</FlatSource>
<FlatDuration>
<Type>ADU</Type>
<Value>29500</Value>
<Tolerance>500</Tolerance>
</FlatDuration>
<PreMountPark>False</PreMountPark>
<PreDomePark>False</PreDomePark>
</Calibration>
</Job>
Regards,
Paul