It sometimes happens that a Release has a bug that is easier to fix by issuing a fix in another Release right on top of the release with the bug.
It was just before the holiday that Intuit issued Maintenance Release 4 for QuickBooks 2019 Desktop, now they are issuing Release 5 to fix a problem that was causing an error when some users attempted to update to Release 4.
Release 5
- Bug Fix - Fixed an issue that will cause Error 1328 for some users when installing Release 4 (R4).