DO YOU TAKE MY PASSWORDS FROM MY OLD BROWSER

Capital letters ?? You ?? You are texting peers on a public forum, and even in Fx there are many many people so not sure who you would expect the you to be to answer. There are some developers that can better explain, but understanding your situation more, may be very helpful

No. No one does anything to your passwords, have you lost them after an upgrade or some other event ?

It's something that depends on where you're moving your data from. Does anything from Import data from another browser look relevant to what you're aiming to do?