Sitecore WFFM: Script for removing old "Save to database" save action and removing <host> and <from> parameters from forms after upgrading

## FixWebforms.aspx
<%@ Page Language="C#" %>
<%@ Import Namespace="Sitecore.Diagnostics" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<%
    var formTemplateId = Sitecore.Data.ID.Parse("{FFB1DA32-2764-47DB-83B0-95B843546A7E}");

    // The root item containing your web forms to be fixed
    var webformsFolder = Sitecore.Configuration.Factory.GetDatabase("master").GetItem("{F1F7AAB6-C8CE-422F-A214-F610C109FA63}");
    var webforms = webformsFolder.Axes.GetDescendants().Where(x => x.TemplateID == formTemplateId).ToList();

    var saveToDbActionsRemoved = 0;
    var parametersUpdated = 0;
    var errors = 0;

    var hostRegex = @"&lt;host&gt;.*?&lt;\/host&gt;";
    var fromRegex = @"&lt;from&gt;.*?&lt;\/from&gt;";

    foreach (var webform in webforms)
    {
        try
        {
            var saveActionXml = XElement.Parse(webform["Save Actions"]);
            var saveToDatabaseAction = saveActionXml.Element("g").Elements("li").FirstOrDefault(x => x.Attribute("id").Value == "{F03608CC-559B-451E-BC5B-6A7ADFF32C94}");

            if (saveToDatabaseAction != null)
            {
                Log.Info("[FixWebforms] "+webform.Paths.ContentPath+" "+webform.ID+" | Removing 'SaveToDatabase' action", this);
                saveToDatabaseAction.Remove();
                saveToDbActionsRemoved++;
            }

            var parametersElements = saveActionXml.Element("g")
                .Elements("li")
                .Where(x => x.Attribute("id").Value == "{D4502A11-9417-4479-9F2A-485F45D2E2D0}")
                .Select(x => x.Element("parameters"))
                .ToList();

            var didUpdateParameters = false;
            foreach (var parameters in parametersElements)
            {
                if (Regex.IsMatch(parameters.Value, hostRegex))
                {
                    Log.Info("[FixWebforms] "+webform.Paths.ContentPath+" "+webform.ID+" | Removing 'host' parameter", this);
                    parameters.Value = Regex.Replace(parameters.Value, hostRegex, "");
                    didUpdateParameters = true;
                }

                if (Regex.IsMatch(parameters.Value, fromRegex))
                {
                    Log.Info("[FixWebforms] "+webform.Paths.ContentPath+" "+webform.ID+" | Removing 'from' parameter", this);
                    parameters.Value = Regex.Replace(parameters.Value, fromRegex, "");
                    didUpdateParameters = true;
                }
            }

            if (didUpdateParameters)
                parametersUpdated++;

            webform.Editing.BeginEdit();
            {
               webform["Save Actions"] = saveActionXml.ToString(SaveOptions.DisableFormatting);
            }
            webform.Editing.EndEdit();
        }
        catch (Exception ex)
        {
            Log.Error("[FixWebforms] Failed to fix "+webform.Paths.ContentPath+" "+webform.ID, ex, this);
            errors++;
        }
    }

    Log.Info("[FixWebforms] Webforms: "+ webforms.Count, this);
    Log.Info("[FixWebforms] Removed 'SaveToDatabase' actions: " + saveToDbActionsRemoved, this);
    Log.Info("[FixWebforms] Removed parameters: " + parametersUpdated, this);
    Log.Info("[FixWebforms] Errors: " + errors, this);
%>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Title</title>
</head>
<body>
    <form id="HtmlForm" runat="server">
        <div>

        </div>
    </form>
</body>
</html>