One option is, after descent from Belščica to transverse, descend a bit more to Hrašenska planina. Hut visible whole time of crossing on ridge. Under it find path leading right, soon (at next hut) turns left and descends to road by which you reach Valvasor. I had no problems.
Second option is, from Hrašenska planina continue left where small house without roof. Bajta also visible from path, stands approx under Vajnež. From there nice path to Urbasa and Potoška. Good luck.