Support saving a cohort from retention rows

[macobo]

Is your feature request related to a problem?

Retention insight currently doesn't allow saving cohorts, seeing recordings as other insight features do.

Describe the solution you'd like

Use a similar person model to the rest of the insights, allow saving cohort(s) from retention.

Describe alternatives you've considered

Additional context

Based off of a client question in slack.

cc @EDsCODE as feature owner

Thank you for your feature request – we love each and every one!

[tessema-t]

Hi, thanks for creating this ticket. I just wanted to provide some additional context.

It would be useful to be able to save a particular Retention Cohort as a Cohort of users in PostHog in order to compare one group to another to see if a change or new release has had any long term effect on the retention of a group.

For example:

• Retention group A consists of all users who signed up to our service between 01 Feb - 07 Feb and has an 8 week Retention rate of 10%.
• Retention group B consists of all users who signed up to our service between 15 Feb - 21 Feb, after a change in our onboarding process, and has an 8 week Retention rate of 25%.

It would be useful to be able to save these as Cohorts in PostHog so that we can add Cohort titles and descriptions, and monitor behavioural changes post important changes, experiments and releases.

[posthog-bot]

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