Inter Company Invoice permissions lock scenario problem

while using company tree such as
A
B
–C
–D

while C and D buy from B only, when creating supplier B and customers C and D, when creating inter company invoice (sales -> purchase) neither of C or D can access their purchase invoices because of permessions restriction (When C open purchase invoice from B it says C doesn’t have permissions for company D) and D can’t open it also (D can’t access company C).