I am experiencing an intermittent issue with the DDR menu 2.0.1 in DNN 6.0.1.We have a large number of child portals (~100) with a single portal alias e.g. (www.mysite.com/US)We also have the master portal with root site as an alias and it's own language alias e.g. (www.mysite.com and www.mysite.com/UK)Occasionally, menus on the child portals are generating without their alias. Using the menu therefore returns to the master portal.Clearing the dnn cache seems to solve the issue but only temporarily. We cannot recreate the issue locally or in our development environments so are finding it hard to diagnose.We are using ddr 2.0.1 and dnn 6.0.1. I guess the issue is likely to be with DNN Navigation or friendly URL provider and upgrading DNN would be a good start but some help would be appreciated.We are also having a problem where sitemaps are generating URLs with no portal alias too which may be related/relevantThanks