you can make quotation from supplier quotation

erpnext/selling/doctype/quotation/quotation.json

@@ -2336,6 +2336,35 @@
    "search_index": 0, 
    "set_only_once": 0, 
    "unique": 0
+  }, 
+  {
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fieldname": "supplier_quotation", 
+   "fieldtype": "Link", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Supplier Quotation", 
+   "length": 0, 
+   "no_copy": 0, 
+   "options": "Supplier Quotation", 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "unique": 0
   }
  ], 
  "hide_heading": 0, 
@@ -2350,7 +2379,7 @@
  "istable": 0, 
  "max_attachments": 1, 
  "menu_index": 0, 
- "modified": "2016-11-07 05:58:07.587479", 
+ "modified": "2017-01-04 06:28:07.269867", 
  "modified_by": "Administrator", 
  "module": "Selling", 
  "name": "Quotation", 
@@ -2537,5 +2566,6 @@
  "sort_order": "DESC", 
  "timeline_field": "customer", 
  "title_field": "title", 
+ "track_changes": 0, 
  "track_seen": 0
 }