The annotation scales are application specific, not drawing. They are held in the registry. What exactly are you trying to do? If you want to add annotation scales to an object, you can select the object(s) add them from the properties dialog.
acad.dwt, the template I use to create empty drawings with no styles or style based layers, comes with some metric annotation scales but I always have to make more if I have larger maps. It would be nice to be able to export/import them, rather than what I do now, which is have a blank drawing with the extra scales in it and insert it as a block.
The default scale list (annotation scales) can be modified from the Options dialog box, User Preferences tab (in 2013), then they will be available all the time.
I was frustrated by this issue recently while doing some training for a government client. In my past experience, I could "reset" the scales, and have them revert to the normal Imperial Civil scales. In this case, they insisted on staying in Architectural scales (things like 1/8" = 1' and so forth).
I checked the UNITS settings, and everything else I could think of, but couldn't fix the problem.
Of course, this template started from someone at Colorado State Governement, who had also set ANGBASE=90 and ANGDIR=1, which took over an hour to figure out... So who knows what sort of messes where created there. I hate it when people change this sort of thing... Makes a mess for people down-stream, who are puzzled about why things aren't working "normally"...
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