I think there are some long-running issues with the staff view in Sonar.
It seems to me that you might benefit from writing in something other than Sonar, such as that free notation program from Finale (stripped down of course from their full-featured version) - and then import the files into Sonar.
Just a thought,
Bob Bone
Wisdom is a giant accumulation of "DOH!"
Sonar: Platinum (x64), X3 (x64)
Audio Interfaces: AudioBox 1818VSL, Steinberg UR-22
Computers: 1) i7-2600 k, 32 GB RAM, Windows 8.1 Pro x64 & 2) AMD A-10 7850 32 GB RAM Windows 10 Pro x64
Soft Synths: NI Komplete 8 Ultimate, Arturia V Collection, many others
MIDI Controllers: M-Audio Axiom Pro 61, Keystation 88es
Settings: 24-Bit, Sample Rate 48k, ASIO Buffer Size 128, Total Round Trip Latency 9.7 ms