[chimerax-users] Distinguishing between upper and lower case chain IDs before and after splitting chains

Hi, My model (cif format) contains 34 chains, and so I've been using upper case and lower case letters for chain IDs. When I read in my model, the select command distinguishes between upper case and lower case, but after applying the split command on my model ('split #1 chains'), the select command no longer distinguishes between upper and lower case. I.e. 'select #1/D' will select both chains D and d. The split command works correctly, producing models 1.1-1.34. Also, is it possible to create a model from a selection? I can't find such a command anywhere, and the only thing I can figure out is to do the following: 'save *name* format mmcif models *selecion_name*; open test.cif' Thanks, Yazan