Cannot restore untradable duplicate to club

Hi, 

I recently completed the marquee match ups for arsenal vs Man City. I luckily packed two dokus untradable, worth ~20k coins each on the market. 

I put one in my team and one in the new untradeble duplicate storage. 

this being new I didn’t realise you could put dupes straight into the sbc so I put the normal version from my team in. 

I then tried to take my duped doku back to my club but this did not work no matter what I tried. Tried sending to club from an sbc, looking in club, searching, using concept player, from web app and console, nothing worked. 

my idea was to quick sell the dupe and then restore him hoping I would be able to use him again. 

this did work, but surely this is not intended as we only get 5 restores a month. 

hope this can help someone / the fix gets noticed 

thanks