The LGW 744's at FRA

Hi
I see there are now 2 at FRA, why would they need heavy maintenance so soon after their refit? Was the refit just that, and did not include any major maintenance to Engines / airframe etc?
edit to thread title by mod for clarity......Nick
I see there are now 2 at FRA, why would they need heavy maintenance so soon after their refit? Was the refit just that, and did not include any major maintenance to Engines / airframe etc?
edit to thread title by mod for clarity......Nick