Layout Viewport Standard Scale Reverts to Unwanted Scale

[dbdoug62]

Recently, I make a viewport in Layout / Paperspace, select the viewport, right-click, and in the Properties palette I set its Standard scale to 1/4"=1'-0", and its Annotation scale to 1/4"=1'-0".  I close the Properties palette and de-select the viewport. Then I re-select it and open the Properties palette to find that the Standard scale is no longer set to 1/4"=1'-0". It has set itself to another scale, and I'm unable to convince it to accept and retain the scale I want.  The behavior only happens when working with viewports at 1:48 scale.  The unwanted scale and the desired scale both have the same "0.25 paper units = 12 drawing units" settings in the Edit Scale dialog box in Scalelistedit.  The fields for Scale properties / Paper units: / Drawing units: are editable for the scale that I don't want to use, and are greyed out for the scale that I do want to use. 

This behavior isn't in one drawing file - it's common to all my drawings now.  I've been using AutoCAD for 34 years, never had this happen.  AutoCAD has also decided to randomly create new scales that have _1 appended at the end of the name.  That seems like an unrelated issue, but maybe not?  

[pendean]

So this is just a PROPERTIES pop-up issue? You seem to state it is, since nothing else about the viewport scale is incorrect and I'm guessing the content does not change either.

After you change the viewport scale, LOCK the viewport. Does it change after that?

Do you need to ensure PICKFIRST and PICKADD variables are set to the default listed in HELP?

Your AutoCAD/LT year version as listed in ABOUT command is...?
Is this a clean installation, or did you opt to migrate from an older version when you started using this year version?

[cadffm · Accepted solution]

Hi 

if you have multiple scales with the same definition,

Autocad use the first or the last in the list.

Change the order or if you dont need the the second one, delete this scale

_scalelistedit

[dbdoug62]

Thanks Sebastian - exactly what I needed to know! In the hundreds of times I've used Scalelistedit, I never noticed that the order of the list was essential to the way scales are applied, and the way that the scale list itself is managed.  Problem solved.