diff --git a/app/plugins/Transmogrify/README.md b/app/plugins/Transmogrify/README.md
index c5a13dbbe..0826dad97 100644
--- a/app/plugins/Transmogrify/README.md
+++ b/app/plugins/Transmogrify/README.md
@@ -206,8 +206,14 @@ Optional remediation helper (opt‑in): colon replacement
 - By default, Transmogrify does not change group names and will error on invalid Standard names.
 - You can opt in to replace “:” in Standard group names with a safer character or string during migration. The special name “CO” remains invalid and is not auto‑renamed.
 
-Example (replace ":" with "-"):
+Example (replace ":" with "-"), shorthand when passing a lone "-" is problematic:
 
 ```bash
-bin/cake transmogrify --groups-colon-replacement '-'
+bin/cake transmogrify --groups-colon-replacement-dash
+```
+
+For every other character, use the full option:
+
+```bash
+bin/cake transmogrify --groups-colon-replacement '@'
 ```
diff --git a/app/plugins/Transmogrify/src/Command/TransmogrifyCommand.php b/app/plugins/Transmogrify/src/Command/TransmogrifyCommand.php
index 27519b25f..57df6ae87 100644
--- a/app/plugins/Transmogrify/src/Command/TransmogrifyCommand.php
+++ b/app/plugins/Transmogrify/src/Command/TransmogrifyCommand.php
@@ -31,6 +31,7 @@
 
 use App\Lib\Traits\LabeledLogTrait;
 use App\Lib\Util\DBALConnection;
+use App\Lib\Util\StringUtilities;
 use App\Model\Table\MetaTable;
 use App\Service\ConfigLoaderService;
 use App\Service\DbInfoService;
@@ -364,6 +365,21 @@ public function execute(Arguments $args, ConsoleIo $io): int
           $qualifiedTableName = $this->outconn->qualifyTableName($t);
 
           if($modeltableEmpty && !$notSelected) {
+            $fkQualifiedTableName = StringUtilities::classNameToForeignKey($qualifiedTableName);
+            if (
+              isset($this->cache['rejected'])
+              && !empty($this->cache['rejected'][$qualifiedTableName][$row[$fkQualifiedTableName]])
+            ) {
+              // This row will be rejected because it references a parent record that does not exist.
+              // The parent record has been rejected before, so we can't insert this record.
+              $this->cache['rejected'][$qualifiedTableName][$row['id']] = $row;
+              $io->warning(sprintf(
+                'Skipping record %d in table %s - parent record does not exist',
+                $row['id'] ?? 0,
+                $t
+              ));
+              continue;
+            }
             $this->outconn->insert($qualifiedTableName, $row);
             // Step 8: Execute any post-processing hooks after successful insertion
             $this->runPostRowHook($t, $origRow, $row);
diff --git a/app/plugins/Transmogrify/src/Lib/Traits/HookRunnersTrait.php b/app/plugins/Transmogrify/src/Lib/Traits/HookRunnersTrait.php
index 9e139c230..757e6bc5b 100644
--- a/app/plugins/Transmogrify/src/Lib/Traits/HookRunnersTrait.php
+++ b/app/plugins/Transmogrify/src/Lib/Traits/HookRunnersTrait.php
@@ -44,7 +44,7 @@ private function runPreTableHook(string $table): void {
       throw new \RuntimeException("Unknown preTable hook: $method");
     }
 
-    $this->io->info('Running pre-table hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
+    $this->io->verbose('Running pre-table hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
     $this->{$method}();
   }
 
@@ -62,7 +62,7 @@ private function runPostTableHook(string $table): void {
     if(!method_exists($this, $method)) {
       throw new \RuntimeException("Unknown postTable hook: $method");
     }
-    $this->io->info('Running post-table hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
+    $this->io->verbose('Running post-table hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
     $this->{$method}();
   }
 
@@ -82,7 +82,7 @@ private function runPreRowHook(string $table, array &$origRow, array &$row): voi
     if(!method_exists($this, $method)) {
       throw new \RuntimeException("Unknown preRow hook: $method");
     }
-    $this->io->info('Running pre-row hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
+    $this->io->verbose('Running pre-row hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
     $this->{$method}($origRow, $row);
   }
 
@@ -102,7 +102,7 @@ private function runPostRowHook(string $table, array &$origRow, array &$row): vo
     if(!method_exists($this, $method)) {
       throw new \RuntimeException("Unknown postRow hook: $method");
     }
-    $this->io->info('Running post-row hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
+    $this->io->verbose('Running post-row hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
     $this->{$method}($origRow, $row);
   }
 
@@ -123,7 +123,7 @@ private function runSqlSelectHook(string $table, string $qualifiedTableName): st
     if(!method_exists(RawSqlQueries::class, $method)) {
       throw new \RuntimeException("Unknown sqlSelect hook: $method");
     }
-    $this->io->info('Running SQL select hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
+    $this->io->verbose('Running SQL select hook: ' . ucfirst(preg_replace('/([A-Z])/', ' $1', $method)));
     return RawSqlQueries::{$method}($qualifiedTableName, $this->inconn->isMySQL());
   }
 }
\ No newline at end of file
diff --git a/app/plugins/Transmogrify/src/Lib/Traits/RowTransformationTrait.php b/app/plugins/Transmogrify/src/Lib/Traits/RowTransformationTrait.php
index b0065913a..5516bbda1 100644
--- a/app/plugins/Transmogrify/src/Lib/Traits/RowTransformationTrait.php
+++ b/app/plugins/Transmogrify/src/Lib/Traits/RowTransformationTrait.php
@@ -103,6 +103,7 @@ protected function reconcileGroupMembershipOwnership(array $origRow, array &$row
     //     in invalid membership
     // (3) Otherwise just return so the Membership gets created
 
+    $tableName = 'group_members';
     if($origRow['owner'] && !$origRow['deleted'] && !$origRow['co_group_member_id']) {
       // Create a membership in the appropriate owners group, but not
       // on changelog entries
@@ -119,7 +120,6 @@ protected function reconcileGroupMembershipOwnership(array $origRow, array &$row
           'actor_identifier' => $origRow['actor_identifier']
         ];
 
-        $tableName = 'group_members';
         $qualifiedTableName = $this->outconn->qualifyTableName($tableName);
         $this->outconn->insert($qualifiedTableName, $ownerRow);
       } else {
@@ -128,6 +128,8 @@ protected function reconcileGroupMembershipOwnership(array $origRow, array &$row
     }
 
     if(!$row['member'] && !$row['owner']) {
+      // we are caching the rejected rows so we can reject the rows that reference them as well.
+      $this->cache['rejected'][$tableName][$row['id']] = $row;
       throw new \InvalidArgumentException('member not set on GroupMember');
     }
   }