Resolve MIDI Controller Issues

I need assistance to resolve connection problems with my MIDI controllers after updating to Logic Pro 11.2.1. I lost communication with my 4 Mackie Control and 3 XT units. Despite restarting Logic Pro and the controllers, and checking MIDI settings, the issue persists. I've also been in contact with Logic support for a week without resolution.

- Key Requirements:
- Re-establish communication between Logic Pro 11.2.1 and my Mackie Control units.
- Address any potential MIDI mapping issues.
- Ensure stable connection and performance.

- Ideal Skills and Experience:
- Expertise with Logic Pro, specifically version 11.2.1.
- Experience troubleshooting MIDI controller connectivity, especially with Mackie Control.
- Ability to diagnose and resolve MIDI mapping and performance issues.