Macsen Langwarrin

I appreciate this is an old thread, but I have a new issue which is related to this directly. After a couple of years I decided to rebuild my complex home island and did the simple step of returning all the items on the land. All no-copy items vanshed and never appeared back in my inventory. This included a couple of rarae gacha's but also a very expensive sauna that the creators have ignored my request to replace. Has anyone any idea where the no-copy items may be found?