multiple minor fixes

erpnext/patches/v5_0/update_projects.py

@@ -10,13 +10,15 @@ def execute():
 	for m in frappe.get_all("Project Milestone", "*"):
 		if (m.milestone and m.milestone_date
 			and frappe.db.exists("Project", m.parent)):
-			frappe.get_doc({
+			task = frappe.get_doc({
 				"doctype": "Task",
 				"subject": m.milestone,
 				"expected_start_date": m.milestone_date,
 				"status": "Open" if m.status=="Pending" else "Closed",
 				"project": m.parent,
-			}).insert(ignore_permissions=True)
+			})
+			task.flags.ignore_mandatory = True
+			task.insert(ignore_permissions=True)
 
 	# remove project milestone
 	frappe.delete_doc("DocType", "Project Milestone")