An update on this question. As you can see, I have received no responses to this issue, which I have to admit surprises me a bit. Is there anyone out there who can direct me to someone involved with Subsurface tech support? I have left this query on several dive boards, no responses. I have been tinkering with the problem, and have this additional information. The lines with the "pink" start pressure and end pressure squares cannot be deleted UNLESS I go in and manually change the information in the O2% line. As far as I can tell, this value HAS to be the same as the other line on the dive. I can change either line, the line with the pink squares or the line without. As long as both lines have the same O2% value, then the "remove this cylinder" square at the beginning of each line is enabled, I can delete the line, and the air pressure line appears on the graph. I also discovered why the squares were pink. If there is not a number in the Start Pressure AND the End Pressure data locations with the End Pressure less than the Start pressure, the 2 squares turn pink.
I like Subsurface. I like the layout of the data, the ability to add and subtract information to the graphs, and most of the layout. Naturally, I would love to pick and choose a few of the components of Diving Log 6.0 and add to Subsurface, and I am still finding out about sharing information between a program on my desktop and a program on my iphone/ipad (Dive mate probably, since it is the only IOs program I have found which will let me directly download from my dive computer onto my ipad with the help of their Fusion dongle). But I am very concerned about this problem with downloading dives from my Cobalt to Subsurface. I want to make it as easy as possible for my family to download information from their dive computers to a desktop program without having to go in and "massage" the data. The one thing I haven't tried yet is downloading directly from the Cobalt computer to the Subsurface program. This problem has appeared when importing a log file downloaded from the Cobalt computer to the Cobalt logbook, then "import log files" from the cobalt logbook to the Subsurface program.
I apologize for the lengthy comment, but I am hoping someone, ANYONE can point me the direction for some assistance. I can import a log to Diving Log 6.0 without issue, but when I import that same log to Subsurface I have this problem with extra unwanted cylinder information causing issues with my data. The problems came off of dive logs downloaded from 2 different Cobalt dive computers. It only was an issue on the Nitrox dives from my Cobalt, but all of the dives, both Nitrox and Air, were affected on the logs from my wife's computer. Any suggestions from the collected intelligence of the diving community?