Uploading copy of company file

I had an error when doing a backup and needed to do a rebuild and had error 350 with (2) errors that could not be fixed.  Was told to contact support.  I contacted support and the person attemped to help me and I ended up with (4) error's so I ended the call.  I then called out to a CPA friend who is swamped with taxes right now and took a look at what was going on and we tried a couple things that should have cleared up the issue.  I ended up with (3) error.  I then contacted the QB Support once again and that person insisted that I update my software to 2022 before moving on.  So we did.  She thought that would clear the problem, It did not!.  Bottom line I ended up speaking to a Supervisor and he helped me get it back to (2) errors and couldn't fix the last two errors. 

Now here is the question!  They want me to upload my companies files and send it to them to have someone, (I'm thinking out of the United States) in Data Services take a look at it and try and fix the problem.  Has anyone every heard of doing this or has anyone ever done this.  My company is a little worried about doing this.

Can I please get some feed back about this.

Thanks,

JNR