Because this information is critical to your security, Firefox deletes it to protect you when your password is reset to prevent other people from accessing it.
Dokulaž toś te daty su wažne za wašu wěstotu, Firefox je wulašujo, aby was šćitał, gaž se waše gronidło slědk staja, aby pśistupoju pśez drugich luźi zajźował.