diff --git a/app/Services/ImportProcessor.php b/app/Services/ImportProcessor.php
index 8bb6aad..f0b8305 100644
--- a/app/Services/ImportProcessor.php
+++ b/app/Services/ImportProcessor.php
@@ -3127,7 +3127,12 @@ private function upsertAddress(int $personId, array $addrData, $mappings): array
         if (! isset($addrData['country']) || $addrData['country'] === null || $addrData['country'] === '') {
             $addrData['country'] = 'SLO';
         }
-        $existing = PersonAddress::where('person_id', $personId)->where('address', $addressLine)->first();
+        // Compare addresses with all spaces removed to handle whitespace variations
+        $addressLineNoSpaces = preg_replace('/\s+/', '', $addressLine);
+        $existing = PersonAddress::where('person_id', $personId)
+            ->whereRaw("REPLACE(address, ' ', '') = ?", [$addressLineNoSpaces])
+            ->first();
+        
         $applyInsert = [];
         $applyUpdate = [];
         foreach ($mappings as $map) {
@@ -3176,6 +3181,11 @@ private function upsertAddress(int $personId, array $addrData, $mappings): array
                 return ['action' => 'inserted', 'address' => $created];
             } catch (QueryException $e) {
                 // If unique constraint violation, skip instead of aborting
+                Log::warning('Address constraint violation during import', [
+                    'person_id' => $personId,
+                    'address' => $addressLine,
+                    'error' => $e->getMessage(),
+                ]);
                 if ($e->getCode() === '23505' || str_contains($e->getMessage(), 'unique') || str_contains($e->getMessage(), 'duplicate')) {
                     return ['action' => 'skipped', 'message' => 'Address already exists (constraint violation)'];
                 }