Gmail "losing" moved mails
Er indoors has been migrating away from a desktop Thunderbird mail and proper email account onto Gmail so she can access it easily from her phone when she is out and about and still use it on her laptop PC. After a few weeks she spent Friday evening trying to tidy up the Gmail inbox by opening new folders and moving mails into them by subject/content. She did this on her laptop machine.
After a couple of hours of effort she was alarmed to go to one of her new folders and find only two emails in it rather than the twenty odd she moved there. They were/are not in deleted emails, they are not still in the inbox, they just seem to have been lost.
In a moment of panic she grabbed her phone and found that it can find the missing emails within the folders even though the folder, before opening, shows only two emails. These may be only the unread emails within the folder........ we don't know.
Is there a quirk in laptop Gmail that stops some emails being displayed after moving to folders? Anything else to cause emails to vanish from PC Gmail but remain, in the new folders, when working on a mobile phone?
Is there a recovery trick?
Help, please.
Rans6.............