Premiere 2017 is missing some shortcuts
The following shortcuts will potentially NOT appear in Premiere Pro 2017's Keyboard Shortcuts Mapper, even though they will still work, IF they were already assigned in an older version of Premiere:
SHIFT 2 Application 🡺 Window 🡺 Source Monitor
SHIFT 3 Application 🡺 Window 🡺 Timeline
SHIFT 4 Application 🡺 Window 🡺 Program Monitor
SHIFT 5 Application 🡺 Window 🡺 Audio Track Mixer
Watch the video for a full explanation.