Batteryclip laying under de cooler, this is a cooler for a another compenent. Yes i solder it. Before you do that, code the cables and take photo's because a lot of things must be reconnected.
Yes on the same place, i have not testing the change with the new replacement. The best is before you change the battery to make a back-up from you amp/tonebanks (i think so, but.........)
I use for Windows10 the Line6 Editor V3.06.0, but i have buy an antoher midi-interface because i had problemens with de older interface (no communication with the Vetta-II combo). I have now the Roland USB UM-ONE midi-interface and it works now perfect with Windows10 en the editor.
Yes i have replaced it with a batteryclip and solder on the board, type of battery = GP Lithium CR2430 and delivered by conrad.nl (German electronicsshop).
The results after replacing perfect.