diff --git a/app/common/ValueConverter.ts b/app/common/ValueConverter.ts
index 4f422bfd..7869215a 100644
--- a/app/common/ValueConverter.ts
+++ b/app/common/ValueConverter.ts
@@ -10,6 +10,7 @@ import {
   ValueParser
 } from 'app/common/ValueParser';
 import {CellValue, GristObjCode} from 'app/plugin/GristData';
+import { TableDataActionSet } from "./DocActions";
 
 
 /**
@@ -192,22 +193,26 @@ export function createConverter(formatter: BaseFormatter, parser: ValueParser) {
  * The higher order function separates docData (passed by ActiveDoc)
  * from the arguments passed to call_external in Python.
  */
-export function convertFromColumn(docData: DocData) {
-  return function(
-    sourceColRef: number,
-    type: string,
-    widgetOpts: string,
-    visibleColRef: number,
-    values: ReadonlyArray<CellValue>,
-    displayColValues?: ReadonlyArray<CellValue>,
-  ): CellValue[] {
-    const formatter = createFullFormatterFromDocData(docData, sourceColRef);
-    const parser = createParserRaw(
-      ...createParserOrFormatterArgumentsRaw(docData, type, widgetOpts, visibleColRef)
-    );
-    const converter = createConverter(formatter, parser);
-    return convertValues(converter, values, displayColValues || values);
-  };
+export function convertFromColumn(
+  metaTables: TableDataActionSet,
+  sourceColRef: number,
+  type: string,
+  widgetOpts: string,
+  visibleColRef: number,
+  values: ReadonlyArray<CellValue>,
+  displayColValues?: ReadonlyArray<CellValue>,
+): CellValue[] {
+  const docData = new DocData(
+    (_tableId) => { throw new Error("Unexpected DocData fetch"); },
+    metaTables,
+  );
+
+  const formatter = createFullFormatterFromDocData(docData, sourceColRef);
+  const parser = createParserRaw(
+    ...createParserOrFormatterArgumentsRaw(docData, type, widgetOpts, visibleColRef)
+  );
+  const converter = createConverter(formatter, parser);
+  return convertValues(converter, values, displayColValues || values);
 }
 
 export function convertValues(
diff --git a/app/server/lib/ActiveDoc.ts b/app/server/lib/ActiveDoc.ts
index dcbe7259..2dfd0720 100644
--- a/app/server/lib/ActiveDoc.ts
+++ b/app/server/lib/ActiveDoc.ts
@@ -79,7 +79,7 @@ import {UIRowId} from 'app/common/UIRowId';
 import {FetchUrlOptions, UploadResult} from 'app/common/uploads';
 import {Document as APIDocument, DocReplacementOptions, DocState, DocStateComparison} from 'app/common/UserAPI';
 import {convertFromColumn} from 'app/common/ValueConverter';
-import {guessColInfoWithDocData} from 'app/common/ValueGuesser';
+import {guessColInfo} from 'app/common/ValueGuesser';
 import {parseUserAction} from 'app/common/ValueParser';
 import {TEMPLATES_ORG_DOMAIN} from 'app/gen-server/ApiServer';
 import {Document} from 'app/gen-server/entity/Document';
@@ -2637,10 +2637,8 @@ export class ActiveDoc extends EventEmitter implements AssistanceDoc {
       sandboxOptions: {
         exports: {
           request: (key: string, args: SandboxRequest) => this._requests.handleSingleRequestWithCache(key, args),
-          guessColInfo: (values: Array<string | null>) =>
-            guessColInfoWithDocData(values, this.docData!),
-          convertFromColumn: (...args: Parameters<ReturnType<typeof convertFromColumn>>) =>
-            convertFromColumn(this.docData!)(...args)
+          guessColInfo,
+          convertFromColumn,
         }
       },
     });
diff --git a/sandbox/grist/useractions.py b/sandbox/grist/useractions.py
index 8cd630a2..5d8d0c8c 100644
--- a/sandbox/grist/useractions.py
+++ b/sandbox/grist/useractions.py
@@ -139,7 +139,7 @@ def _make_clean_col_info(col_info, col_id=None):
   return ret
 
 
-def guess_col_info(values):
+def guess_col_info(values, doc_model):
   """
   Returns a pair col_info, values
   where col_info is a dict which may contain a type and widgetOptions
@@ -154,7 +154,12 @@ def guess_col_info(values):
     # Use the exported guessColInfo if we're connected to JS
     from sandbox import default_sandbox
     if default_sandbox:
-      guess = default_sandbox.call_external("guessColInfo", values)
+      doc_info = doc_model.doc_info.lookupOne()
+      try:
+        doc_settings = json.loads(doc_info.documentSettings)
+      except ValueError:
+        doc_settings = {}
+      guess = default_sandbox.call_external("guessColInfo", values, doc_settings, doc_info.timezone)
       # When the result doesn't contain `values`, that means the guessed type is Text
       # so there was nothing to convert.
       values = guess.get("values", values)
@@ -906,7 +911,7 @@ class UserActions(object):
         # Guess the type when it starts out as Any. We unfortunately need to update the column
         # separately for type conversion, to recompute type-specific defaults
         # before they are used in formula->data conversion.
-        col_info, values = guess_col_info(values)
+        col_info, values = guess_col_info(values, self._docmodel)
         # If the values are all blank (None or empty string) leave the column empty
         if not col_info:
           return values
@@ -1555,8 +1560,20 @@ class UserActions(object):
     if src_col.displayCol:
       display_col = table.get_column(src_col.displayCol.colId)
       display_values = [encode_object(display_col.raw_get(r)) for r in row_ids]
+    meta_table_data = {
+      meta_table_id: actions.get_action_repr(
+        self._engine.fetch_table(meta_table_id, formulas=False)
+      )
+      for meta_table_id in [
+        "_grist_DocInfo",
+        "_grist_Tables",
+        "_grist_Tables_column",
+        "_grist_Views_section_field"
+      ]
+    }
     converted_values = call_external(
       "convertFromColumn",
+      meta_table_data,
       src_col.id,
       typ,
       widgetOptions,