Sonar X3e not saving MIDI Input / channels

I was able to reproduce something like this when I opened a Platinum-originated project in X3; the input port assignments were all too high by 2 ports, and tracks that were originally assigned to the last available port ended up assigned to 'Omni - All Inputs'.
 
But when I corrected the assignments and re-saved from X3e, the correct assignments were restored on re-opening in X3 as expected. 
 
One way or another, I think that project must be corrupted, or originated in an earlier/later version that generated a file format that's not working for X3.
 
Try creating a small small test project from the Normal template in X3 (e.g. three ports, 3 channels each). If that works, you might have to re-construct your 'auditioning' project starting from scratch with the Normal template, and copy-pasting content from the old one.

Hi Brundlefly.  Hey, good news:  After shutting everything down (Sonar, laptop and keyboard) and taking a well-deserved nap, I got up, restarted, and now everything is set correctly again.  I'm now trying to figure out what exactly caused the "fix".  I had rebooted everything individually before (Sonar, or the keyboard, or the laptop) but maybe not all three.  I was going to try your suggestions, and (in preparation for it) did the following things in the following order:
 
1.  Booted up the laptop,
2.  Turned on the arranger keyboard (making no adjustments whatsoever),
3.  Opened Sonar / my project,
4.  Un-archived the first couple folders (songs) and pushed Play,
5.  Checked the track inputs, and found that they were now ALL CORRECT, each of the 700 tracks set to receive on its own individual instrument channel.  Go figure.  Since last night it had simply refused to do this, no matter what I tried.
 
I do remember this happening on one prior occasion about a month ago, but I'm sure it didn't require a complete shutdown, or even a shutdown of Sonar, IIRC.  At that time, I remember it just fixed itself after I either hit a button on my arranger or chose a different style of auto-accompaniment, or something.  Thing is, I tried doing all those things this time but to no avail.
 
One of the last things I remember doing before shutting down (earlier today) was disconnecting the UA-25EX interface, then re-connecting it (same USB port).  It didn't solve the problem all by itself (the tracks still just said "Omni"), but maybe the combination of doing that and then rebooting everything is what did the trick, not sure.
 
Also, during the time that it was fouled up, I did notice a couple other things which might serve as clues as to what might be going on:
 
Older projects which had always been dependably set to the correct Input channels suddenly had the same problem as my "audition" project.  So, whatever was screwing up, it was not specific to one project.
 
Also, I noticed that when I went into the arranger keyboard's MIDI menu and chose settings like "All Parts" or "Master Keyboard" or "Keyboard & Style", I could successfully get Sonar's Input to change from "Omni" to "None" and back to "Omni".  Of course that didn't help with the individual channels problem, but it shows that Sonar's Input was at least responding to MIDI data from the keyboard.
 
And lastly, the MIDI Output was never affected.  My existing Sonar MIDI songs (in all my projects) would play the keyboard just fine.  The problem was just with the Inputs, trying to record new material.
 
I wonder if there's a simple Sysx message that I could send from the keyboard to Sonar - to sort of reestablish the channels if this ever happens again.  Maybe it would set things right without having to reboot everything.  I'll check that out on the Yamaha PSR forum (it's a Yamaha PSR-S900 keyboard).
 
In the meantime, I'd sure welcome any more thoughts or theories about it.  As for now I'm just happy to have all my projects functioning again.   Thanks for the valuable help already given.
 
- Bob K
 
 

brundlefly
So If I'm understanding correctly, your only MIDI Input is from the USB connection of the keyboard, and the driver only loads if the keyboard is in a certain configuration...

 
Well, it's a traditional MIDI cable from the keyboard to the UA-25EX, then USB from that to the laptop.  And the Novation controller is connected via USB directly to the laptop.  Its "AutomapMIDI" is now again among the Input choices in my tracks, but thankfully it's no longer being defaulted to due to problems with the other Input.
 
I'm not sure about how the driver functions really, but I do know my choices of channels were always at least present, even when it was out of whack - I could always manually  reset everything - but it just wouldn't "stick" after saving.
 
Actually, I'm not sure whether to conclude from this that all the correct channel assignments were in fact saved with the project all along (and Sonar was just being hampered by something in the MIDI signal chain), or whether Sonar never does really "save" channel assignments, but rather just reacts to whatever channels are currently loaded in the keyboard's auto-accompaniment style...
 
Ah but wait!  Remember I said I turned on the keyboard tonight and made no adjustments (i.e., chose no accompaniment style), yet Sonar now has all the correct channels assigned for the particular style I was working with at the time of saving.  So I guess Sonar did save everything.  Well, kudos to good ol' Sonar then!
 
And kudos to you for the suggestions and brainstorming.  Appreciate it.