# Migrating an existing graph from an Apache TinkerPop Gremlin server to Amazon Neptune
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If you have graph data in an Apache TinkerPop Gremlin Server that you would like to migrate to Amazon Neptune, you would take the following steps:

1. Export the data from Gremlin server into Amazon Simple Storage Service (Amazon S3).

1. Convert the exported data to a [CSV format that the Neptune bulk loader can import](bulk-load-tutorial-format-gremlin.md).

1. Using [Neptune Bulk Loader](bulk-load.md), import the data into a Neptune DB cluster that you have prepared.

1. Modify your existing application to connect to Neptune's Gremlin endpoint, and make any changes necessary to conform with [Neptune Gremlin implementation differences](access-graph-gremlin-differences.md).