Hello David,
the upgrade for your motor, for all AS 4.x, can be found here:
V4.0 DT Upgrade (8LSA55.R0022D300-1) | B&R Industrial Automation (br-automation.com)
Using a different motor type for a .R motor (Resolver => no motor data stored on encoder) is a bad idea, because the motor parameters are taken from the configuration in the AS project.
Best case would be that the current controller parametes are wrong (automatically set according to the motor parameters) and it makes horribly screeching noises.
Worst case would be that the motor is damaged or destroyed by a too high current.
The errors in the SDM about the not connected modules are most likely due to a very old AR version.
I tried it on a test system of mine with AS 6.0 and AR 6.0 and it shows all plugged modules green.