Does Avast choose only a part of detected for sending to Lab on VirusChest?

Does Avast choose only a part of detected for sending to Lab?

Hi all, thank you for watching. I am having a question that is Avast Free sending a file only detected part, or not.
In those days, I was running bootscan by Avast Free on my pc.
Then it is detected as any malware.

The malware is detected at

" ...\*********.default\ImapMail\imap.gmail-1.com\[Gmail].sbd\*******|>PartNo_0#********* [*]  " 

And the threat name is “HTML:Facebook-A [Phish]”.

I tried to send this file as sample through the virus chest of Avast Free, so I opened there, and click “Send file” as “False detection”.
The message box was showing me that
"Send file for analysis

 ...\*********.default\ImapMail\imap.gmail-1.com\[Gmail].sbd\*******|>PartNo_0#********* [*]"

But now I am getting a question about keeping privacy around this system.

Under this situation, did Avast Free choose a part only detected code as sending file?
I can’t get being ensure.

The file I submitted is a cache file of Thunderbird Mail Client, and I opened this file by Windows text soft, there are mails received by it.

I am using thunderbird for only usage of contact security companies or the others related to my device companies.
But I want to know whether I sent only detected part as malware, or not.

Please teach my about this question. I hope you answer here. Thank you.

Excuse me, I have forgotten write my sys information.

Avast Free 18.2.2328
latest Windows 10 OS and Avast Free

But now I am getting a question about keeping privacy around this system.
Since you use avast free they want to sell you a upgrade

The file that is moved to chest is the one uploaded to lab. Why do you think it is a FP ?

You can upload and test file(s) and URLS here >> www.virustotal.com