Hi there! I'm sorry to hear that you're experiencing issues with Collabora Office corrupting files when loaded from OneDrive. That can be really frustrating. Let’s try to get to the bottom of this together.

To help me understand your situation better:
1. Can you tell me what types of files you are trying to open (e.g., .docx, .xlsx)?
2. Are you seeing any specific error messages when the files are corrupted?
3. Have you noticed if certain files are more prone to corruption than others, or is it occurring with all files?

In the meantime, here are a few troubleshooting steps that might help resolve the issue:

1. Check OneDrive Settings:
- Go to OneDrive settings > Settings.
- Ensure that the "Files On-Demand" feature is unchecked. Sometimes, enabling this setting can cause issues with file integrity during the synchronization process.

2. Upload Different File Types:
- If possible, try to upload and open a new, simple document to see if the problem persists. This can help determine if the issue is with certain file types or all files in general.

3. Ensure Collabora is Updated:
- Make sure you are using the latest version of Collabora Office. Sometimes, updates can fix known issues or bugs.

4. Check for Antivirus Interference:
- Occasionally, antivirus software can interfere with file syncing and restoration from OneDrive. Consider temporarily disabling your antivirus and see if that resolves the issue.

If these steps don’t resolve the problem, let me know what you have tried, and we can move on to more advanced troubleshooting or consider contacting higher-level support. I'm here to help!