Airport Upgrades and Miles?

After a 5 year hiatus from Virgin after 2 very distressing experiences with VA ground staff. I might have been quick to judge them as in hindsight both times were in Lagos and well... Lagos might as well be on Mars! 
I had a really nice flight with them back from SFO in June and decided go back to the fold for my regular LHR-BOM hop for work.
On the way home from SFO, as I was traveling back alone I upgraded to PE at the airport for $419 (Q-K). I booked my trip to Mumbai in 2 weeks with Virgin today and decided to add my miles from June.
I thought I might get some miles for my previous E-PE upgrade but the lady at the flying club said no. Not too sure if she understood my request as she was very abrupt.
As I usually feel like death returning home from BOM (LOVE indian food but always makes me sick) I was thinking about upgrading from PE to UC. Its at the moment £705 but was going to chance it at the airport and let fate decide.
Is it the same for UC upgrades at airport? will I not be able to claim miles back? Do I even get miles if I hit the upgrade button on account?
Thanks

I had a really nice flight with them back from SFO in June and decided go back to the fold for my regular LHR-BOM hop for work.
On the way home from SFO, as I was traveling back alone I upgraded to PE at the airport for $419 (Q-K). I booked my trip to Mumbai in 2 weeks with Virgin today and decided to add my miles from June.
I thought I might get some miles for my previous E-PE upgrade but the lady at the flying club said no. Not too sure if she understood my request as she was very abrupt.
As I usually feel like death returning home from BOM (LOVE indian food but always makes me sick) I was thinking about upgrading from PE to UC. Its at the moment £705 but was going to chance it at the airport and let fate decide.
Is it the same for UC upgrades at airport? will I not be able to claim miles back? Do I even get miles if I hit the upgrade button on account?
Thanks