The following question asks for the correct expression to use for a specific case of plagiarism:
and though it got a correct answer on ELU, it was removed and migrated to another site.
The question is essentially about an English term and its usage and OP is not asking about possible implications of "self-plagiarism". Moreover, the answers given in the other site don't seem to add much to the answer given on ELU.
On what grounds was the question removed?
Edit: the whole issue appears to be based on my misunderstanding of the question, sorry for that.