Guild Wars 2

I’m transferring servers, will I lose all my items I have currently listed on the TP?

Very likely not. Your character bags and bank is transferred with you. only items in a guildbank will not transfer with you. Besides that the tradepost is allready a cross-server system. So I would be very very surprised if the items don’t transfer with you.

There is nothing to transfer. Think of the TP as a huge cooking pot where all servers have access to it (to grab stuff from, and to throw stuff into). When you list something in TP, you are throwing your stuff in this huge cooking pot. When you transfer to another server, your stuff are still in the pot, not with you. So just grab your stuff back anytime (unless someone else bought it off).