Issue
When configuring related lists, there is no option for Project > Parent
Cause
Missing Parent label and incorrect Reference on the dictionary entry for Parent
Dictionary Entry for the "Parent" column is incorrect
Entry in the instance is referencing the "Change Request" table
Column label is not Parent so while it did not show "Parent", it was actually on the correct column name of "Parent" but the reference is incorrect.
Resolution
Populate the missing Parent label and correct the Reference on the dictionary entry for Parent