Workflow becomes invalid after each trigger.
I am also facing the same issue. I have set the triggering point to Modified date which is Auto/System Generated Date Column. This is so because my requirement was whenever any changes are done in form, approval request should get triggered. Since we are not sure, what column user is going to change, we kept the triggering point to modified date. But workflow is getting invalid after each trigger. I have too enable it each time or edit and save.
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