Custom UserFullname list under Project Lists is not getting refreshed when we delete users from SA

Hi All,

Good Day !

I had a requirement to populate the full name values for 'Assigned To' and 'Detected By' fields. I created 2 new fields as 'Assigned To Name' & ' Detected By Name'. I created a new List,'UserFullname' under Project Lists in Customization. Some piece of code was added and this is working fine.

Suppose that we have 5 users A, B, C, D & E in 'UserFullname' list. I deleted user E from Site Admin list. Now, in Project Users List(Tools->Customization->Project Users), I cannot find this user E. But in 'UserFullname' list, I can still find this user. This list is not getting refreshed. Kindly advise on this scenario. 

Thanks in Advance,

Rarima.