dimension style changing

... sigh....  I really, really wish I could find a way to make this software cooperate.  I have to do a revision on a project, and when I opened the first drawing, ALL the dimensions have changed format.  I had them set to fractions, and they've all changed to three place decimal. Is this normal??  I know how to set the units, which I did, but now it's changing the font size for the dimensions, too, and there's a separate set of settings for "Dimensions", and another set for each type of dimension as well.  Do I have to change ALL of these for EVERY DRAWING???  I've got all this set in the templates, but SW seems to just ignore it.  What is up with this?  We use Inventor (which has its own set of greif and heartache, too) unless we have a client who requests SW, so I don't get as much experience with SW as I'd like, but I just can't believe that everyone has the same unreal level of failure with this drawing interface....  HEEELLLPPPP!!!!!

SolidworksDrawings And Detailing