It is an industry norm and also a design requirement from the NHTSA. In the mid ninties we had a recall very similar to this on the cars I worked on. We disconnected the engine management power lead from the fused side of the main chassis fuse and reconnected it to the battery side of the fuse block. The fuse would blow from age and the vehicle would die and the potential for an accident multiplied by an unknown but large factor. The potential for the same failure exists here and the industry norm and legally required fix is to make sure that power is always available to keep the vehicle running.
Randy