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Timescale 2.7 released a new version of Continuous Aggregate (#4269) that store the final aggregation state instead of the byte array of the partial aggregate state, offering multiple opportunities of optimizations as well a more compact form. In 2.10.0 released on February 2023 the Continuous Aggregate old format deprecation was announced. With this PR the ability of creating Continuous Aggregate in the old format was removed, but we still support migrate from the old to the new format by running the `cagg_migrate` procedure. This is the continuation of the PR #5977 started by @pdipesh02. References: https://docs.timescale.com/api/latest/continuous-aggregates/cagg_migrate/ https://github.com/timescale/timescaledb/releases/tag/2.10.0 https://github.com/timescale/timescaledb/releases/tag/2.7.0 https://github.com/timescale/timescaledb/pull/5977