TSQL: UPDATE with INSERT INTO SELECT FROM

Question

so I have an old database that I\'m migrating to a new one. The new one has a slightly different but mostly-compatible schema. Additionally, I want to renumber all tables from

Answer 1

Make a column in MV6.Post.OldMV5Id

make a insert into MV6.Post select .. from MV5.Post

then make an update of MV5.Post.MV6ID