We've created an easy way to reload all linetypes in a drawing so they match up with the current units and scale settings. It's called the Reload All Linetypes, or REAL, tool.
Open our Reload All Linetypes tool:
F/X CAD users: Manage ribbon, Reload All Linetypes button
F/X Admin menu, Reload All Linetypes option
F/X Site menu, Reload All Linetypes option
or type REAL in the Command line
Your linetypes will reload.
Sometimes linetype definitions will load from both Metric and Imperial libraries, making it impossible to get them all to look correct. The REAL tool will reload all linetypes from the current library.