While working with SharePoint workflows I have a scenario to
upgrade the logic for workflow. But there are many items already running on the
existing workflow. So new workflow shouldn’t override on existing. We need to
create an upgrade for existing workflow.
TO do that we have to follow the steps below,
Change Workflow assembly version number by right clicking on
the workflow project, In Application section, Click on Assembly Info button.
Change Assembly Version number and file version number in Assembly information
Update the assembly version number in workflow.xml file
workflow element. Change the Solution ID in the manifest.xml file
Change .wsp name. For example we have Site.DataRequestWorkFlow.wsp
previously, update it to Site.DataRequestWorkflowV1.wsp.
Deploy new wsp file using PowerShell commands or stsadm
commands and we have to Run IISReset command
Change the old workflow to not allowing any new instances
and disable the options to start manually or Item created. By doing this there
will not any new instances for old workflow. Create a new workflow association
using new workflow that deployed.
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