Rulers - why not remember which units works?

[SlavekDD]

Like in post title make many graphics in Designer for wide print printers - make in mm and cm. Why reopen the document and rulers its in PX - not understand. 

Screenshots in post.

[Sean P]

Hi Slavek,

The document units should be saved with your document. Are you saving your document after changing the ruler units? Could you get a screenshot showing the process you're going through that is causing them to not save please?

[SlavekDD]

First step to do work all units make before make design - every projects make in mm units - for large print or Digital Prints like Business Cards