When editing a schematic, there is a command design -> update pcb. When editing a pcb, there is a command design -> import changes. These two commands do the same thing, but have different names. Both commands should have the same name. This will make easyeda less confusing and easier to learn. I suggest that both should be changed to 'update pcb from schematic'. When updating a pcb, there is a dialog box, and the dialog box includes an option to rename track nets.  When placing a pcb module, there is a dialog box to enter module prefix.  The option to rename track nets should be added to the module prefix dialog box, because users often want to rename track nets when placing a pcb module.