diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index facd149ae5..3adcbb6c32 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -706,7 +706,6 @@ phutil_register_library_map(array(
     'ManiphestExcelFormat' => 'applications/maniphest/export/ManiphestExcelFormat.php',
     'ManiphestExportController' => 'applications/maniphest/controller/ManiphestExportController.php',
     'ManiphestHovercardEventListener' => 'applications/maniphest/event/ManiphestHovercardEventListener.php',
-    'ManiphestLegacyTransactionQuery' => 'applications/maniphest/query/ManiphestLegacyTransactionQuery.php',
     'ManiphestNameIndex' => 'applications/maniphest/storage/ManiphestNameIndex.php',
     'ManiphestNameIndexEventListener' => 'applications/maniphest/event/ManiphestNameIndexEventListener.php',
     'ManiphestPHIDTypeTask' => 'applications/maniphest/phid/ManiphestPHIDTypeTask.php',
@@ -2823,7 +2822,6 @@ phutil_register_library_map(array(
     'ManiphestTaskSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'ManiphestTaskStatus' => 'ManiphestConstants',
     'ManiphestTaskSubscriber' => 'ManiphestDAO',
-    'ManiphestTransaction' => 'PhabricatorMarkupInterface',
     'ManiphestTransactionComment' => 'PhabricatorApplicationTransactionComment',
     'ManiphestTransactionEditor' => 'PhabricatorEditor',
     'ManiphestTransactionPreviewController' => 'ManiphestController',
diff --git a/src/applications/maniphest/query/ManiphestLegacyTransactionQuery.php b/src/applications/maniphest/query/ManiphestLegacyTransactionQuery.php
deleted file mode 100644
index cfe05aaf05..0000000000
--- a/src/applications/maniphest/query/ManiphestLegacyTransactionQuery.php
+++ /dev/null
@@ -1,53 +0,0 @@
-<?php
-
-final class ManiphestLegacyTransactionQuery {
-
-  public static function loadByTasks(
-    PhabricatorUser $viewer,
-    array $tasks) {
-
-    $xactions = id(new ManiphestTransactionQuery())
-      ->setViewer($viewer)
-      ->withObjectPHIDs(mpull($tasks, 'getPHID'))
-      ->needComments(true)
-      ->execute();
-
-    foreach ($xactions as $key => $xaction) {
-      $xactions[$key] = ManiphestTransaction::newFromModernTransaction(
-        $xaction);
-    }
-
-    return $xactions;
-  }
-
-  public static function loadByTask(
-    PhabricatorUser $viewer,
-    ManiphestTask $task) {
-
-    return self::loadByTasks($viewer, array($task));
-  }
-
-  public static function loadByTransactionID(
-    PhabricatorUser $viewer,
-    $xaction_id) {
-
-    $xaction = id(new ManiphestTransactionPro())->load($xaction_id);
-    if (!$xaction) {
-      return null;
-    }
-
-    $xaction = id(new ManiphestTransactionQuery())
-      ->setViewer($viewer)
-      ->withPHIDs(array($xaction->getPHID()))
-      ->needComments(true)
-      ->executeOne();
-
-    if ($xaction) {
-      $xaction = ManiphestTransaction::newFromModernTransaction($xaction);
-    }
-
-    return $xaction;
-  }
-
-
-}
diff --git a/src/applications/maniphest/storage/ManiphestTransaction.php b/src/applications/maniphest/storage/ManiphestTransaction.php
index cb0aa64cd1..19cbcb6999 100644
--- a/src/applications/maniphest/storage/ManiphestTransaction.php
+++ b/src/applications/maniphest/storage/ManiphestTransaction.php
@@ -1,7 +1,6 @@
 <?php
 
-final class ManiphestTransaction
-  implements PhabricatorMarkupInterface {
+final class ManiphestTransaction {
 
   const MARKUP_FIELD_BODY = 'markup:body';
 
@@ -16,15 +15,6 @@ final class ManiphestTransaction
     $this->proxy = clone $this->proxy;
   }
 
-  public static function newFromModernTransaction(
-    ManiphestTransactionPro $pro) {
-
-    $obj = new ManiphestTransaction();
-    $obj->proxy = $pro;
-
-    return $obj;
-  }
-
   public function getModernTransaction() {
     return $this->proxy;
   }
@@ -204,88 +194,8 @@ final class ManiphestTransaction
     return $phids;
   }
 
-  public function canGroupWith($target) {
-    if ($target->getAuthorPHID() != $this->getAuthorPHID()) {
-      return false;
-    }
-    if ($target->hasComments() && $this->hasComments()) {
-      return false;
-    }
-    $ttime = $target->getDateCreated();
-    $stime = $this->getDateCreated();
-    if (abs($stime - $ttime) > 60) {
-      return false;
-    }
-
-    if ($target->getTransactionType() == $this->getTransactionType()) {
-      $aux_type = PhabricatorTransactions::TYPE_CUSTOMFIELD;
-      if ($this->getTransactionType() == $aux_type) {
-        $that_key = $target->getMetadataValue('customfield:key');
-        $this_key = $this->getMetadataValue('customfield:key');
-        if ($that_key == $this_key) {
-          return false;
-        }
-      } else {
-        return false;
-      }
-    }
-
-    return true;
-  }
-
   public function hasComments() {
     return (bool)strlen(trim($this->getComments()));
   }
 
-
-/* -(  Markup Interface  )--------------------------------------------------- */
-
-
-  /**
-   * @task markup
-   */
-  public function getMarkupFieldKey($field) {
-    if ($this->shouldUseMarkupCache($field)) {
-      $id = $this->getID();
-    } else {
-      $id = PhabricatorHash::digest($this->getMarkupText($field));
-    }
-    return "maniphest:x:{$field}:{$id}";
-  }
-
-
-  /**
-   * @task markup
-   */
-  public function getMarkupText($field) {
-    return $this->getComments();
-  }
-
-
-  /**
-   * @task markup
-   */
-  public function newMarkupEngine($field) {
-    return PhabricatorMarkupEngine::newManiphestMarkupEngine();
-  }
-
-
-  /**
-   * @task markup
-   */
-  public function didMarkupText(
-    $field,
-    $output,
-    PhutilMarkupEngine $engine) {
-    return $output;
-  }
-
-
-  /**
-   * @task markup
-   */
-  public function shouldUseMarkupCache($field) {
-    return (bool)$this->getID();
-  }
-
 }