[chimerax-users] Changing Chain IDs in ChimeraX

Hi My name is Amar and I am working on the structure of a phage tail complex. I have multiple dodecameric assemblies within the tail complex. Is there a way to change/name chain IDs from say P1 to P12 in chimeraX so that they are all read and rendered? Can I make ChimeraX read chains beyond P9 when I have numbered them from say P1 to P12? Coot reads it fine but ChimeraX gets confused after P9 (image attached). I cannot select chain "P12" or any residue/sidechain in it [cid:image001.png@01DCF8BD.9D7AF260] Best Amar