Method and system for updating legacy software

A method includes analyzing operational code to determine identifiers used within the operational code. The method further includes grouping like identifiers based a relational aspect of the identifiers. The method further includes, for one or more identifier groups, determining potential feature(s) of the identifier group(s). The method further includes testing the potential feature(s) based on a corresponding feature test suite to produce feedback regarding meaningfulness of the potential feature(s). The method further comprises, when the meaningfulness is above a threshold, adding the potential feature(s) to a feature set. The method further includes, when the meaningfulness is at or below the threshold, adjusting analysis parameter(s), grouping parameter(s), feature parameter(s), and/or testing parameter(s).