ACEP ID:
-- ElvUI Profile String (truncated) ["media"] = ["font"] = "PT Sans Narrow", ["fontSize"] = 11, ["fontOutline"] = "OUTLINEMONO" , ["unitframe"] = ["player"] = ["width"] = 250, ["height"] = 45, ["power"] = ["height"] = 8
If you are a developer interested in building this, start with the Python/lupa approach and open-source the mapping rules on GitHub. The ElvUI community would greatly benefit from such a tool.
"v12_to_v13": "unitframe.units.player": "unitframe.individualUnits.player", "nameplates.threat.glowing": "nameplates.threatGlow.enable" , "benikui_to_vanilla": "benikui.actionbars.styler": null, "actionbars.buttonSize": "actionbars.buttons.size"