diff --git a/src/Command/Migrations/ImportPartKeeprCommand.php b/src/Command/Migrations/ImportPartKeeprCommand.php
index d860ce03..829dfbd0 100644
--- a/src/Command/Migrations/ImportPartKeeprCommand.php
+++ b/src/Command/Migrations/ImportPartKeeprCommand.php
@@ -91,6 +91,14 @@ class ImportPartKeeprCommand extends Command
         $io->info('Importing manufacturers...');
         $count = $this->importer->importManufacturers($data);
         $io->success('Imported '.$count.' manufacturers.');
+
+        $io->info('Importing categories...');
+        $count = $this->importer->importCategories($data);
+        $io->success('Imported '.$count.' categories.');
+
+        $io->info('Importing Footprints...');
+        $count = $this->importer->importFootprints($data);
+        $io->success('Imported '.$count.' footprints.');
     }
 
 }
\ No newline at end of file
diff --git a/src/Services/ImportExportSystem/PartkeeprImporter.php b/src/Services/ImportExportSystem/PartkeeprImporter.php
index d2bf13f7..5887b56c 100644
--- a/src/Services/ImportExportSystem/PartkeeprImporter.php
+++ b/src/Services/ImportExportSystem/PartkeeprImporter.php
@@ -23,6 +23,9 @@ namespace App\Services\ImportExportSystem;
 use App\Doctrine\Purger\ResetAutoIncrementORMPurger;
 use App\Doctrine\Purger\ResetAutoIncrementPurgerFactory;
 use App\Entity\Base\AbstractDBElement;
+use App\Entity\Base\AbstractStructuralDBElement;
+use App\Entity\Parts\Category;
+use App\Entity\Parts\Footprint;
 use App\Entity\Parts\Manufacturer;
 use App\Entity\Parts\MeasurementUnit;
 use App\Entity\Parts\Part;
@@ -144,8 +147,141 @@ class PartkeeprImporter
         return count($partunit_data);
     }
 
-    public function setIDOfEntity(AbstractDBElement $element, int $id): void
+    public function importCategories(array $data): int
     {
+        if (!isset($data['partcategory'])) {
+            throw new \RuntimeException('$data must contain a "partcategory" key!');
+        }
+
+        $partcategory_data = $data['partcategory'];
+
+        //In a first step, create all categories like they were a flat structure (so ignore the parent)
+        foreach ($partcategory_data as $partcategory) {
+            $category = new Category();
+            $category->setName($partcategory['name']);
+            $category->setComment($partcategory['description']);
+
+            $this->setIDOfEntity($category, $partcategory['id']);
+            $this->em->persist($category);
+        }
+
+        $this->em->flush();
+
+        //In a second step, set the correct parent element
+        foreach ($partcategory_data as $partcategory) {
+            $this->setParent(Category::class, $partcategory['id'], $partcategory['parent_id']);
+        }
+        $this->em->flush();
+
+        return count($partcategory_data);
+    }
+
+    private function importElementsWithCategory(array $data, string $target_class, string $data_prefix): int
+    {
+
+    }
+
+    public function importFootprints(array $data): int
+    {
+        if (!isset($data['footprint'])) {
+            throw new \RuntimeException('$data must contain a "footprint" key!');
+        }
+        if (!isset($data['footprintcategory'])) {
+            throw new \RuntimeException('$data must contain a "footprintcategory" key!');
+        }
+
+        //We import the footprints first, as we need the IDs of the footprints be our real DBs later (as we match the part import by ID)
+        //As the footprints category is not existing yet, we just skip the parent field for now
+        $footprint_data = $data['footprint'];
+        $max_footprint_id = 0;
+        foreach ($footprint_data as $footprint) {
+            $entity = new Footprint();
+            $entity->setName($footprint['name']);
+            $entity->setComment($footprint['description']);
+
+            $this->setIDOfEntity($entity, $footprint['id']);
+            $this->em->persist($entity);
+            $max_footprint_id = max($max_footprint_id, (int) $footprint['id']);
+        }
+
+        //Import the footprint categories ignoring the parents for now
+        //Their IDs are $max_footprint_id + $ID
+        $footprintcategory_data = $data['footprintcategory'];
+        foreach ($footprintcategory_data as $footprintcategory) {
+            $entity = new Footprint();
+            $entity->setName($footprintcategory['name']);
+            $entity->setComment($footprintcategory['description']);
+            //Categories are not assignable to parts, so we set them to not selectable
+            $entity->setNotSelectable(true);
+
+            $this->setIDOfEntity($entity, $max_footprint_id + (int) $footprintcategory['id']);
+            $this->em->persist($entity);
+        }
+
+        $this->em->flush();
+
+        //Now we can correct the parents and category IDs of the parts
+        foreach ($footprintcategory_data as $footprintcategory) {
+            //We have to use the mapped IDs here, as the imported ID is not the effective ID
+            if ($footprintcategory['parent_id']) {
+                $this->setParent(Footprint::class, $max_footprint_id + (int)$footprintcategory['id'],
+                    $max_footprint_id + (int)$footprintcategory['parent_id']);
+            }
+        }
+        foreach ($footprint_data as $footprint) {
+            if ($footprint['category_id']) {
+                $this->setParent(Footprint::class, $footprint['id'],
+                    $max_footprint_id + (int)$footprint['category_id']);
+            }
+        }
+
+        $this->em->flush();
+
+        return count($footprint_data) + count($footprintcategory_data);
+    }
+
+    /**
+     * Assigns the parent to the given entity, using the numerical IDs from the imported data.
+     * @param  string  $class
+     * @param int|string $element_id
+     * @param int|string $parent_id
+     * @return AbstractStructuralDBElement The structural element that was modified (with $element_id)
+     */
+    private function setParent(string $class, $element_id, $parent_id): AbstractStructuralDBElement
+    {
+        $element = $this->em->find($class, (int) $element_id);
+        if (!$element) {
+            throw new \RuntimeException(sprintf('Could not find element with ID %s', $element_id));
+        }
+
+        //If the parent is null, we're done
+        if (!$parent_id) {
+            return $element;
+        }
+
+        $parent = $this->em->find($class, (int) $parent_id);
+        if (!$parent) {
+            throw new \RuntimeException(sprintf('Could not find parent with ID %s', $parent_id));
+        }
+
+        $element->setParent($parent);
+        return $element;
+    }
+
+    /**
+     * Set the ID of an entity to a specific value. Must be called before persisting the entity, but before flushing.
+     * @param  AbstractDBElement  $element
+     * @param  int|string $id
+     * @return void
+     */
+    public function setIDOfEntity(AbstractDBElement $element, $id): void
+    {
+        if (!is_int($id) && !is_string($id)) {
+            throw new \InvalidArgumentException('ID must be an integer or string');
+        }
+
+        $id = (int) $id;
+
         $metadata = $this->em->getClassMetadata(get_class($element));
         $metadata->setIdGeneratorType(ClassMetadataInfo::GENERATOR_TYPE_NONE);
         $metadata->setIdGenerator(new \Doctrine\ORM\Id\AssignedGenerator());