In cases where relative pronouns like ambayo are used, they should be assigned a PRON part of speech tag and use the PronType feature to indicate they are relative pronouns. I currently have these marked as SCONJ and they should not be.
The relative pronouns should not be attached with a
mark relation as the documentation points out
it is a normally uninflected word, which simply introduces a relative clause, such as [he] še. (In this last use, one needs to distinguish between relative clause markers, which are mark, from relative pronouns such as [en] who or that, which fill a regular verbal argument or modifier grammatical relation.).
Then the root of the relative clause is connected to the noun the relative clause modifies by an
These are not actually relative pronouns. Instead, they are pronouns derived from the verb "to be". They are not part of a relative clause, instead they are simply nouns so the dependents of this are the same as any nominal dependent.