Upgrade Umbrel from 1.2/1.3 to 1.4

I’ve always read in this community that when you perform an Umbrel update, all data is lost. I haven’t found any answers in my research as to whether this situation has already been fixed or if the problem still exists. I would like to know if it is safe to perform an upgrade without running the risk of losing everything.

I read a lot in this community about loss of data after perform Umbrel Upgrade and I would like to understand what is or not true about this topic. Can someone explain what is happening on upgrades that cause loss of data for users?