Hi @ReymondO,

Based on what I have read in this forum, QBDT for Mac 2019 and 2020 are compatible with Big Sur.  For some reason, Intuit will not post this information on the links that you are displaying, but there are a some posts here confirming that QBDT for Mac 2019 and 2020 are compatible with Big Sur by a Quickbooks Team member like you.

Why complicate things with inconsistent or incomplete messaging?  Now it's happening again with Monterey.  Is Intuit really going to ignore customers using QBDT for Mac 2019 and 2020 ( which versions are not that old ), by not supporting macOS Monterey?