How to REpublish Custom Task Forms (InfoPath) to SharePoint 2010 State Machine Workflows

Question

I am new to SharePoint. Sorry if answer to my question is obvious.
I've create Custom Task Form in InfoPath and publish it (File/Publish/Network Location [Form Template Path and filename='MYPROJECT/Forms/ApprovalForm.xsn'; Form template name='ApprovalForm'], in the next window I've cleared Public URL according to the articlehttp://www.codeproject.com/Articles/195348/SharePoint-2010-State-Machine-Workflows-with-Custo).
After it I've added module Forms, and added ApprovalForm.xsn from the existing items.
My xml files: Elements.xml
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
<Workflow
Name="Order New Server"
Description="My SharePoint Workflow"
Id="482cbc86-b717-4981-a49a-3cf4c89e9399"
CodeBesideClass="Myproj.OrderNewServer.OrderNewServer"
CodeBesideAssembly="$assemblyname$"
TaskListContentTypeId="0x01080100C9C9515DE4E24001905074F980F93160">
<Categories/>
<AssociationData><Data></Data></AssociationData>
<MetaData>
<AssociationCategories>List</AssociationCategories>
<Task2_FormURN>urn:schemas-microsoft-com:office:infopath:ApprovalForm:-myXSD-2012-03-09T14-11-55</Task2_FormURN>
<StatusPageUrl>_layouts/WrkStat.aspx</StatusPageUrl>
</MetaData>
</Workflow>
</Elements>
Feature.Template.xml:
<?xml version="1.0" encoding="utf-8" ?>
<Feature xmlns="http://schemas.microsoft.com/sharepoint/" ReceiverAssembly="Microsoft.Office.Workflow.Feature, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" Receiverlass="Microsoft.Office.Workflow.Feature.WorkflowFeatureReceiver">
<Properties>
<Property Key="GloballyAvailable" Value="true" />
<Property Key="RegisterForms" Value="Forms\*.xsn"/>
</Properties>
</Feature>
My form work fine, but when I make changes and republish it, it doesn't update (I see old form). What I tryed:
IISReset
Clear all cookies and cache in IE
Retract solution, restart VS2010, reboot computer.
Change assembly number, guid.
I have no ideas, what can I try for republish my form with changes.
Thank you in advance for any suggestions.
PS: sorry for my writing. English is not my native language.
PPS: when I save new Form to new location and add it to the project, it works.

Answer 1

I've found how can I republish changes. But it seems more like crutch than solution, but it works:
After republishing InfoPath form, I delete file from project (DEL on ApprovalForm.xsn in Solution explorer) and after it add it again. (Add/Existing Item). And then redeploy! Hurray!
Is there any way to redeploy a Task Form directly on the server without importing it in Visual Studio again? I am using some data connections in my task form which are different for different environments (staging, dev. etc.). Seems like I've to create a separate
Workflow WSP file for each envrionment. Any comments?