Hi @Juraj,
Yes web farm server marked healthy. Yes may be the files not 100 % identical but in my case the file not synced. Attachment of the image https://ibb.co/fXmkTQF.
If I'm using the LUKE tool in to my location system. I need a java environment in my local which not possible. And LUKE tool only show the content of the file.
But in my case if file not synced into the MVC application, so what is the use of LUKE tool.
Last I do these thing in my local to identify the issue.
1. Remove both search folder from the CMS and MVC.
2. Rebuild the Indexes
3. Debug the Web Farm not find anything.
4. Updating the Macro signatures of the application.
Syncing is working pages type indexes and page crawler based indexes only custom type indexes file not synced.