ANAHEIM, CA-An investor group formed by Arcturus Group and Avenue Capital Management has purchased Anaheim GardenWalk, a 450,000-square-foot retail lifestyle center here, with the intention of repositioning it. The sales price was not revealed to, but industry sources unrelated to the deal report that county records show the new owners took out a $65-million mortgage on the property. Elliott Management has also joined the group in the acquisition.