cubicweb-tracker #3662858 1.15 migration wastes memory [validation pending]

it uses entities where it only needs eids

prioritynormal
typebug
done in1.15.1
load0.200
load left0.000
closed by#6aea40d8a7f0 [migration] don't build full-blown entities when we just need an eid
patch[migration] don't build full-blown entities when we just need an eid [applied]