VL1000 Lamp MSR 575 vs MSR 575HR

[macsound]

As these moving lights get older, my historical knowledge of what the specific lamp variations mean escapes me... and Google seems to be no help.

The VL1000 spec sheet says MSR 575/HR
I understand that HR stands for hot restrike, which I understand as a feature and why there's probably some tech necessary in the lamp to ensure it doesn't explode when receiving the high voltage burst when it's still glass-melting-hot.

My question is - using a "regular" MSR 575
Can I use ?
or
Does it even exist or they're just mislabeled?

I also understand there's a MSR 575/2 which doesn't have the G22 base which obviously wouldn't work in my situation

Thanks all