The CUI Editor can be used to convert legacy menu (MNU and MNS) and legacy customization (CUI) files to the CUIx format, while leaving the original source files unchanged. Migrates selected custom interface elements from one CUIx file to another CUIx file. Customize User Interface (CUI) Editor.(AutoCAD LT does not support user profiles or materials.) Migrates user profiles, customization (CUIx) files, tool palette (ATC) files, user-defined linetype (LIN) files, hatch pattern (PAT) files, program parameter (PGP) files which contain command aliases, and custom materials. Use the following tools to migrate custom settings and files from a previous release to the current release. Tools for Migrating Custom Settings From Previous Releases