--- title: "Avontus Designer 2020 R4" slug: "avontus-designer-2020-r4" updated: 2023-07-27T15:46:46Z published: 2023-07-27T15:46:46Z canonical: "docs.avontus.com/avontus-designer-2020-r4" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.avontus.com/llms.txt > Use this file to discover all available pages before exploring further. # Avontus Designer 2020 R4 ### **Version: 6.4.668.0 Release Date: November 20, 2019** ## Issues Resolved - Resolved an issue in which incorrect adjacent levels were used in cleaning up bays. - Added a threshold for bearers to replace ledger with truss or double ledger and reverted to previous behavior. - Resolved an error in resetting Material Master.