I have Sonar X2 on Win 7 64bit and a Roland A-800PRO. The A-PRO has been working well for a few months now, it has been set up according the this guide:  
 
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The A-PRO works as expected, while the console is in focus it controls track volume sliders and pan, while vst fx are in focus it controls them, I can easily program which controls are mapped to the A-PRO's knobs and sliders, and all is right with the world.
 
Last night I wanted to record a control change to midi, for a filter on a track. I cannot, for the life of me, get the rotary knobs to send a midi signal to Sonar that I can record. I've set up a control map in the A-PRO Editor and assigned parameters to R3 as in the tutorial above, but I don't receive midi on the track in Sonar even with input set to all midi devices and omni.
 
I do get midi from the stick, and was able to control the cutoff in Fabfilter Micro with the wheel. If I load Micro as an instrument I can set midi learn to use the stick, record this to a track and then send the output to Micro, and it works as expected. However the stick on the A-PRO is not optimal for riding the cutoff freq in Micro, and I really want to use a rotary to get it just right.
 
What am I missing? I feel like it must be something obvious, but I've run through everything I can think of, along with checking over everything mentioned in the two threads at the top of this section that seem to describe similar issues.

You forgot to post the link to the guide?
 
Anyway, if you transmitted Control Map 19 (SONAR ACT Map 2) from your A-800Pro to the A-Pro Editor and assigned the filter message (#74?) to the R3 knob and then transmitted the map back to A-800Pro's map #19, that's a bad idea. This is because every time you launch Sonar the program automatically transmits SONAR ACT MAP 2 to your A-800Pro's map #19 (that's why the LCD says "Receiving...," overwriting the map you edited.
 
The only way I know to achieve your goal here is to transmit the map you edited in the A-Pro Editor to one of maps #1-#18. By doing this, when you want to record controller data using the A-Pro's knobs, sliders, etc, you just turn the Value knob to change the map from #19 to #18. After finish recording, switch it back to map #19.
 
Also, make sure you choose "PORT 1" from the Output Port drop-down when you assign a message in the A-Pro Editor. MIDI tracks in SONAR block incoming data sent via Port 2 once ACT is enabled, even if "Omni" is selected for the MIDI track's input.

Hi Jlien, thanks so much for the reply. The guide I used was this one:
 
(OK, looks like I can't post links, I must still be a spam threat)
 Home » [Hardware Products] » Keyboard Controllers & Sound Modules » [UPDATED] Configuring Your A-Pro to Work With/Without ACT
 
I'll have a close look at your post and try it out when I get the chance, looks like this is more complicated than I thought!