diff --git a/plasmid/source/core-plugins/weismigration/1/as/definitions.py b/plasmid/source/core-plugins/weismigration/1/as/definitions.py
index 468389cb41a52554f6b2993f7dff0efbcfbd5f28..f1608c0bf0b0f689d3f49cd58cbc5d37e7fb6b2b 100644
--- a/plasmid/source/core-plugins/weismigration/1/as/definitions.py
+++ b/plasmid/source/core-plugins/weismigration/1/as/definitions.py
@@ -176,7 +176,7 @@ chemicalDefinition = [
     ["DISSOLVED_IN",                 "General",                 "dissolved in",                     DataType.VARCHAR,                   None,  "", None, None, False],
     ["USED_FOR",                     "General",                 "Used for",                         DataType.VARCHAR,                   None,  "", None, None, False],
     ["EMPTY",                        "General",                 "empty?",                           DataType.BOOLEAN,                   None,  "", None, None, False],
-    ["DATE_ORDERED",                 "General",                 "date ordered",                     DataType.TIMESTAMP,                 None,  "", None, None, False],
+    ["DATE_ORDERED",                 "General",                 "date ordered",                     DataType.VARCHAR,                 None,  "", None, None, False],
     ["LOT_NUM",                      "General",                 "Lot #",                            DataType.VARCHAR,                   None,  "", None, None, False],
     ["CATALOG_NUM",                  "General",                 "Catalog #",                        DataType.VARCHAR,                   None,  "", None, None, False],
     ["STOCK_CONCENTRATION",          "General",                 "Stock concentration",              DataType.VARCHAR,                   None,  "", None, None, False],
diff --git a/plasmid/source/core-plugins/weismigration/1/as/definitionsVoc.py b/plasmid/source/core-plugins/weismigration/1/as/definitionsVoc.py
index a8a1f718bf1010c3609e8cf097ec36aca0f20800..d68dcee4900ba328bf00eee481ba8f03601e71ae 100644
--- a/plasmid/source/core-plugins/weismigration/1/as/definitionsVoc.py
+++ b/plasmid/source/core-plugins/weismigration/1/as/definitionsVoc.py
@@ -136,6 +136,7 @@ vocabularyDefinitions = {
                                           ["USBIOLOGICAL",   "USBiological"],
                                           ["WERNER_BIOAGENTS",   "Werner BioAgents"],
                                           ["WITECAG",   "witecag"],
+                                          ["UNKNOWN",   "unknown"],                                          
                                      ],
                               "OLIGO_CATEGORY" : [
                                          ["CHECKING",   "Checking"],