I cannot find this information anywhere other than reviewing the Support Helpdesk File Area folders and files and reviewing the changelogs. Can you confirm the following?
Latest versions for 4.4:
- 1.4.1
- 1.4.12
- 1.4.2
*Upgrades from 1.4.1 to 1.4.12 and 1.4.1 to 1.4.2 but no upgrade from 1.4.12 to 1.4.2.
*1.4.3 and 1.5 not available for this version.
Latest versions for 4.5-4.6:
- 1.4.1
- 1.4.2
- 1.4.3
*1.5 not available for this version.
Latest versions for 4.7:
- 1.5.0
- 1.5.1