[yt-dev] will yt 2.6 analysis scripts works for yt 3.0 ?

Dear All, My yt version is --- Version = 2.6.1 Changeset = c7bae05dd4ef --- If I update it to 3.0 with the command: yt update --all , will my old analysis scripts(written for 2.6 ) works? Thank you. -- Reju Sam John