Ekos sequences intermittently drop filter from FITS keywords
I've experienced this problem as long as I can remember while sequencing in Kstars/Ekos (at least 18 months).
When I execute a sequence in Ekos, it will usually drop (but sometimes not) the filter name in the imaging sequence from the FITS keywords in the files. As a result, I have to manually specify the filter in post-processing. I can not find a pattern in when it chooses to drop or include the filter name. It will do it correctly a few times at the beginning of imaging, but then sometimes (as in this case) repeat the sequence many times, including the filter only a few times during the imaging session.
I've attached screenshots illustrating the filter configuration, the imaging sequence, the ekos sequence, and a Pixinsight batch preprocessor window showing the distribution of named vs unnamed filters for the same sequence.