Post Script: the lowercase c's are not typos, they are actually what can be written C#min or C#m; they are, indeed, minor chord shorthand.
That is going to confuse folks as you are the only person I've ever seen use that for chord symbols.
Upper case and lower case are used to show keys and modulations when doing an analysis of a composition, but like I said I've never seen them used for chord symbols.
If you enter a chord in Sibelius as "c#7" it automatically corrects it with "C#7", a dominant chord not a minor chord. Same with BIAB and same with MuseScore.