diff --git a/application/models/Logbook_model.php b/application/models/Logbook_model.php
index eed16b219..97de91a9c 100644
--- a/application/models/Logbook_model.php
+++ b/application/models/Logbook_model.php
@@ -1230,7 +1230,9 @@ class Logbook_model extends CI_Model {
 		  $eqsl_rcvd = 'N';
 	  }
 
-	  if ($this->input->post('lotw_sent') && !in_array($this->input->post('prop_mode'), $this->config->item('lotw_unsupported_prop_modes'))) {
+	  if (in_array($this->input->post('prop_mode'), $this->config->item('lotw_unsupported_prop_modes'))) {
+		  $lotw_sent = 'I';
+	  } elseif ($this->input->post('lotw_sent')) {
 		  $lotw_sent = $this->input->post('lotw_sent');
 	  } else {
 		  $lotw_sent = 'N';
diff --git a/application/views/oqrs/qsolist.php b/application/views/oqrs/qsolist.php
index 4fa9b4fe1..cd56a2f9a 100644
--- a/application/views/oqrs/qsolist.php
+++ b/application/views/oqrs/qsolist.php
@@ -161,11 +161,13 @@ if ($qsos->result() != NULL) {
 					$timestamp = strtotime($qsl->COL_LOTW_QSLSDATE);
 					echo " ".($timestamp != '' ? date($custom_date_format, $timestamp) : '');
 				}
-				echo "\" data-bs-toggle=\"tooltip\"";
+				echo "\" data-bs-toggle=\"tooltip\" class=\"lotw-green\"";
+			} elseif ($qsl->COL_LOTW_QSL_SENT == "I") {
+				echo " class=\"qsl-grey\" data-bs-toggle=\"tooltip\" title=\"".__("Invalid (Ignore)")."\"";
+			} else {
+				echo " class=\"lotw-red\"";
 			}
-			echo ' class="lotw-';
-			echo ($qsl->COL_LOTW_QSL_SENT=='Y')?'green':'red';
-			echo '">&#9650;</span>';
+			echo '>&#9650;</span>';
 
 			echo '<span ';
 			if ($qsl->COL_LOTW_QSL_RCVD == "Y") {
diff --git a/application/views/qslprint/qsolist.php b/application/views/qslprint/qsolist.php
index 4a59defee..18c94fab6 100644
--- a/application/views/qslprint/qsolist.php
+++ b/application/views/qslprint/qsolist.php
@@ -169,11 +169,13 @@ if ($qsos->result() != NULL) {
 					$timestamp = strtotime($qsl->COL_LOTW_QSLSDATE);
 					echo " ".($timestamp != '' ? date($custom_date_format, $timestamp) : '');
 				}
-				echo "\" data-bs-toggle=\"tooltip\"";
+				echo "\" data-bs-toggle=\"tooltip\" class=\"lotw-green\"";
+			} elseif ($qsl->COL_LOTW_QSL_SENT == "I") {
+				echo "class=\"lotw-grey\" data-bs-toggle=\"tooltip\" title=\"".__("Invalid (Ignore)")."\"";
+			} else {
+				echo " class=\"lotw-red\"";
 			}
-			echo ' class="lotw-';
-			echo ($qsl->COL_LOTW_QSL_SENT=='Y')?'green':'red';
-			echo '">&#9650;</span>';
+			echo '>&#9650;</span>';
 
 			echo '<span ';
 			if ($qsl->COL_LOTW_QSL_RCVD == "Y") {
diff --git a/application/views/search/search_result_ajax.php b/application/views/search/search_result_ajax.php
index 16b76b5c7..84fb68c64 100644
--- a/application/views/search/search_result_ajax.php
+++ b/application/views/search/search_result_ajax.php
@@ -300,11 +300,13 @@ $ci =& get_instance();
                      $timestamp = strtotime($row->COL_LOTW_QSLSDATE);
                      echo " ".($timestamp != '' ? date($custom_date_format, $timestamp) : '');
                    }
-                   echo "\" data-bs-toggle=\"tooltip\"";
+                   echo "\" data-bs-toggle=\"tooltip\" class=\"lotw-green\"";
+                } elseif ($row->COL_LOTW_QSL_SENT == "I") {
+                   echo "class=\"lotw-grey\" data-bs-toggle=\"tooltip\" title=\"".__("Invalid (Ignore)")."\"";
+                } else {
+                   echo "class=\"lotw-red\"";
                 }
-                echo ' class="lotw-';
-                echo ($row->COL_LOTW_QSL_SENT=='Y')?'green':'red';
-                echo '">&#9650;</span>';
+                echo '>&#9650;</span>';
 
                 echo '<span ';
                 if ($row->COL_LOTW_QSL_RCVD == "Y") {
diff --git a/application/views/view_log/partial/log_ajax.php b/application/views/view_log/partial/log_ajax.php
index a815196c9..8c979709b 100644
--- a/application/views/view_log/partial/log_ajax.php
+++ b/application/views/view_log/partial/log_ajax.php
@@ -227,7 +227,23 @@ function echo_table_col($row, $name) {
 
                 <?php if ( strpos($this->session->userdata('user_default_confirmation'),'L') !== false && ($this->session->userdata('user_lotw_name') != "") ) { ?>
                     <td class="lotw">
-                        <span <?php if ($row->COL_LOTW_QSL_SENT == "Y") { echo "title=\"".__("LoTW")." ".__("Sent"); if ($row->COL_LOTW_QSLSDATE != null) { $timestamp = strtotime($row->COL_LOTW_QSLSDATE); echo " ".($timestamp!=''?date($custom_date_format, $timestamp):''); } echo "\" data-bs-toggle=\"tooltip\""; } ?> class="lotw-<?php echo ($row->COL_LOTW_QSL_SENT=='Y')?'green':'red'?>">&#9650;</span>
+                        <span <?php switch ($row->COL_LOTW_QSL_SENT) {
+                           case "Y":
+                              echo "title=\"".__("LoTW")." ".__("Sent");
+                              if ($row->COL_LOTW_QSLSDATE != null) {
+                                 $timestamp = strtotime($row->COL_LOTW_QSLSDATE);
+                                 echo " ".($timestamp!=''?date($custom_date_format, $timestamp):'');
+                              }
+                              echo "\" data-bs-toggle=\"tooltip\" class=\"lotw-green\"";
+                              break;
+                           case "I":
+                              echo " class=\"lotw-grey\" data-bs-toggle=\"tooltip\" title=\"".__("Invalid (Ignore)")."\"";
+                              break;
+                           default:
+                              echo " class=\"lotw-red\"";
+                              break;
+                        }
+                        ?>>&#9650;</span>
                         <span <?php if ($row->COL_LOTW_QSL_RCVD == "Y") { echo "title=\"".__("LoTW")." ".__("Received"); if ($row->COL_LOTW_QSLRDATE != null) { $timestamp = strtotime($row->COL_LOTW_QSLRDATE); echo " ".($timestamp!=''?date($custom_date_format, $timestamp):''); } echo "\" data-bs-toggle=\"tooltip\""; } ?> class="lotw-<?php echo ($row->COL_LOTW_QSL_RCVD=='Y')?'green':'red'?>">&#9660;</span>
                     </td>
                 <?php } ?>
diff --git a/assets/css/general.css b/assets/css/general.css
index f6f1c24d1..16231a0d2 100644
--- a/assets/css/general.css
+++ b/assets/css/general.css
@@ -404,6 +404,11 @@ TD.lotw {
 	font-size: 1.1em;
 }
 
+.lotw-grey {
+	color: #dddddd !important;
+	font-size: 1.1em;
+}
+
 .qso-edit-box {
 	padding: 10px;
 }
diff --git a/src/QSLManager/QSO.php b/src/QSLManager/QSO.php
index ea18da2ec..009dcb9c8 100644
--- a/src/QSLManager/QSO.php
+++ b/src/QSLManager/QSO.php
@@ -369,10 +369,14 @@ class QSO
 				$timestamp = strtotime($data['COL_LOTW_QSLSDATE']);
 				$lotwstring .= " ". ($timestamp != '' ? date($custom_date_format, $timestamp) : '');
 			}
-			$lotwstring .= "\" data-bs-toggle=\"tooltip\"";
+			$lotwstring .= "\" data-bs-toggle=\"tooltip\" class=\"lotw-green\"";
+		} elseif ($data['COL_LOTW_QSL_SENT'] == "I") {
+			$lotwstring .= "class=\"lotw-grey\" data-bs-toggle=\"tooltip\" title=\"".__("Invalid (Ignore)")."\"";
+		} else {
+			$lotwstring .= "class=\"lotw-red\"";
 		}
 
-		$lotwstring .= ' class="lotw-' . (($data['COL_LOTW_QSL_SENT']=='Y') ? 'green' : 'red') . '">&#9650;</span>';
+		$lotwstring .= '>&#9650;</span>';
 		$lotwstring .= '<span ';
 
 		if ($data['COL_LOTW_QSL_RCVD'] == "Y") {