Flow Hacks | An alternative to Append Comments 

A few people have asked about getting version tags from Flow Dynamic Tags. This can be challenging because the out-of-the-box (OOB) connector does not offer any versioning data. So, to give you a workaround, this video takes a common example around "append comments" on a list, and demos a small change to the list structure in order to use see comment history in OOB Flow actions. It's a hack that would work around the problem while we wait for the product teams to provide additional versioning functionality in the SP connector.
P.S. Side point - if you don't want them to be able to edit their previous comments set everyone's permission level on the MethodsComments list to Add to but not edit or delete.
FYI: There is an action available from Plumsail in the Flow connectors. It is called "Get SharePoint Item Versions" today, but this would be at an additional cost from a 3rd party company.
Learn more:
HTTPs method (thread on StackOverflow):
stackoverflow....
Plumsail Connector:
Company link: plumsail.com/a...
Connector link: docs.microsoft...