Relocated / Occupant owned task lighting

Our project does not include task lighting; however several users have brought existing task lighting with them from the previous premises to the new premises. It is unclear whether the task lights are owned by the project owner or the occupants, although as the project owner has a corporate policy against task lighting, I presume that ownership could be transferred to the occupants if this made any difference. The photographs supplied as documentation for PIf4 were taken after occupation and show task lighting on a number of desks. The review team has indicated that we need to include this task lighting in our LPD calculation. The credit language requires design compliance for all portions of the building within the Tenant's scope of work; however it also indicates that the LPD must be applied to the entire tenant's space. It is clear that pre-existing lighting fixtures in the space must be included in the calculation; however the situation here is somewhat different. Has anyone had experience excluding task lighting which is installed by the project occupants? These will fluctuate over the life of the space as occupants come and go and as they do not form part of the lighting design it is difficult to include them in the LPD calculation in any meaningful way.