Level of effort activity

Good morning all,

please,could some one to explain me why:

i have created a LOEF activity for rented non labor resource for a certain number of activities.

i have created a base line for my plan.During the progress my plan shown a certain delay ,there for the gant bar of activities and baseline are no longer superimposed,but instead to see the bar of level of effort linked to the actual activities ,i see the bar of level of effort is linked to the last bar of the baseline.what is wrong in the begining.