diff --git a/server/db/migrations/20221223131625_preserve_original_format_of_images.js b/server/db/migrations/20221223131625_preserve_original_format_of_images.js
index 6d53eb25..de2ec07c 100644
--- a/server/db/migrations/20221223131625_preserve_original_format_of_images.js
+++ b/server/db/migrations/20221223131625_preserve_original_format_of_images.js
@@ -42,6 +42,49 @@ const rollbackImage = async (knex, tableName, fieldName, prevFieldName) => {
   });
 };
 
+const processAttachmentImage = async (attachment, attachmentsPath) => {
+  const rootPath = path.join(attachmentsPath, attachment.dirname);
+  const thumbnailsPath = path.join(rootPath, 'thumbnails');
+
+  const image = sharp(path.join(rootPath, attachment.filename), {
+    animated: true,
+  });
+
+  let metadata;
+  try {
+    metadata = await image.metadata();
+  } catch (error) {
+    return null;
+  }
+
+  const { width, pageHeight: height = metadata.height } = metadata;
+  const thumbnailsExtension = metadata.format === 'jpeg' ? 'jpg' : metadata.format;
+
+  try {
+    await image
+      .resize(256, height > width ? 320 : undefined, {
+        kernel: sharp.kernel.nearest,
+      })
+      .toFile(path.join(thumbnailsPath, `cover-256.${thumbnailsExtension}`));
+  } catch (error) {
+    return null;
+  }
+
+  if (thumbnailsExtension !== 'jpg') {
+    try {
+      rimraf.sync(path.join(thumbnailsPath, 'cover-256.jpg'));
+    } catch (error) {
+      console.warn(error.stack); // eslint-disable-line no-console
+    }
+  }
+
+  return {
+    width,
+    height,
+    thumbnailsExtension,
+  };
+};
+
 module.exports.up = async (knex) => {
   await migrateImage(knex, 'user_account', 'avatar', 'avatar_dirname');
   await migrateImage(knex, 'project', 'background_image', 'background_image_dirname');
@@ -51,49 +94,13 @@ module.exports.up = async (knex) => {
 
   // eslint-disable-next-line no-restricted-syntax
   for (attachment of attachments) {
-    const rootPath = path.join(config.custom.attachmentsPath, attachment.dirname);
-    const thumbnailsPath = path.join(rootPath, 'thumbnails');
-
-    const image = sharp(path.join(rootPath, attachment.filename), {
-      animated: true,
-    });
-
-    let metadata;
-    try {
-      metadata = await image.metadata(); // eslint-disable-line no-await-in-loop
-    } catch (error) {
-      continue; // eslint-disable-line no-continue
-    }
-
-    const extension = metadata.format === 'jpeg' ? 'jpg' : metadata.format;
-
-    try {
-      // eslint-disable-next-line no-await-in-loop
-      await image
-        .resize(256, metadata.height > metadata.width ? 320 : undefined, {
-          kernel: sharp.kernel.nearest,
-        })
-        .toFile(path.join(thumbnailsPath, `cover-256.${extension}`));
-    } catch (error) {
-      continue; // eslint-disable-line no-continue
-    }
-
-    if (extension !== 'jpg') {
-      try {
-        rimraf.sync(path.join(thumbnailsPath, 'cover-256.jpg'));
-      } catch (error) {
-        console.warn(error.stack); // eslint-disable-line no-console
-      }
-    }
+    // eslint-disable-next-line no-await-in-loop
+    const image = await processAttachmentImage(attachment, config.custom.attachmentsPath);
 
     // eslint-disable-next-line no-await-in-loop
     await knex('attachment')
       .update({
-        image: {
-          width: metadata.width,
-          height: metadata.pageHeight || metadata.height,
-          thumbnailsExtension: extension,
-        },
+        image: image || knex.raw('?? || \'{"thumbnailsExtension":"jpg"}\'', ['image']),
       })
       .where('id', attachment.id);
   }