Filename Conventions

I have many models, drawings and assemblies that were all named using Uppercase letters. Client prefers Uppercase for first letter only, followed by all lowercase letters. SW Explorer won't allow a simple case change when renaming. I must actually change the name using lowercase, then go back and change it again to the proper name. After doing this I notice that my drawing BOM's & part name in Feature Manager DO NOT update to reflect the lowercase. Win Explorer allows me to change to lowercase with a rename but, the same failure to update BOM's & Feature Manager exist. I found that I can delete a BOM & insert a new one in my drawings & the new one will be correct but, the Feature Manager still does not update. Aside from all the typing required, is there a "right" and "wrong" way to do this? Thanks.