database upgrade 3.0.x to 4.4 Mysql errors

[klarter]

Initial try at upgrade caused SQL errors.
Manually dropped several tables
Finally, I am stuck here:
[Z3005] query failed: [1005] Can't create table `zabbix`.`corr_condition_tag` (errno: 150 "Foreign key constraint is incorrectly formed") [alter table `corr_condition_tag`...

[cITc]

I am new to Zabbix and Linux so please forgive my inexperience. I have an CentOS version 7 installed as a VM on Hyper-V and have tried numerous times to download and install Zabix from the on-line reswources using the following for version 4.4.1 and CentOS 7:

rpm -Uvh https://repo.zab...