diff --git a/core/src/main/java/com/github/games647/fastlogin/core/importer/AutoInImporter.java b/core/src/main/java/com/github/games647/fastlogin/core/importer/AutoInImporter.java
new file mode 100644
index 00000000..58245630
--- /dev/null
+++ b/core/src/main/java/com/github/games647/fastlogin/core/importer/AutoInImporter.java
@@ -0,0 +1,36 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import javax.sql.DataSource;
+
+public class AutoInImporter extends Importer {
+
+    private static final String USER_TABLE = "nicknames";
+    private static final String UUID_TABLE = "uuids";
+    private static final String SESSION_TABLE = "sessions";
+
+    @Override
+    public int importData(DataSource source, DataSource target, String targetTable) throws SQLException {
+        Connection con = null;
+        Statement stmt = null;
+        try {
+            con = source.getConnection();
+            stmt = con.createStatement();
+            int importedRows = stmt.executeUpdate("INSERT INTO " + targetTable + " SELECT"
+                    + " name AS Name,"
+                    + " enabledLogin AS Premium,"
+                    + " '' AS LastIp,"
+                    + " REPLACE(puuid, '-', '') AS UUID"
+                    + " FROM " + USER_TABLE
+                    + " JOIN " + UUID_TABLE
+                    + " ON " + UUID_TABLE + ".id = " + UUID_TABLE + ".nickname_id");
+            return importedRows;
+        } finally {
+            closeQuietly(stmt);
+            closeQuietly(con);
+        }
+    }
+}
diff --git a/core/src/main/java/com/github/games647/fastlogin/core/importer/BPAImporter.java b/core/src/main/java/com/github/games647/fastlogin/core/importer/BPAImporter.java
new file mode 100644
index 00000000..9c11838b
--- /dev/null
+++ b/core/src/main/java/com/github/games647/fastlogin/core/importer/BPAImporter.java
@@ -0,0 +1,33 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import javax.sql.DataSource;
+
+public class BPAImporter extends Importer {
+
+    private static final String DEFAULT_TABLE_NAME = "users";
+
+    @Override
+    public int importData(DataSource source, DataSource target, String targetTable) throws SQLException {
+        Connection con = null;
+        Statement stmt = null;
+        try {
+            con = source.getConnection();
+            stmt = con.createStatement();
+            int importedRows = stmt.executeUpdate("INSERT INTO " + targetTable + " SELECT"
+                    + " nick AS Name,"
+                    + " NULL AS UUID,"
+                    + " checked AS Premium,"
+                    + " lastIP AS LastIp,"
+                    + " FROM_UNIXTIME(lastJoined * 0.001) AS LastLogin"
+                    + " FROM " + DEFAULT_TABLE_NAME);
+            return importedRows;
+        } finally {
+            closeQuietly(stmt);
+            closeQuietly(con);
+        }
+    }
+}
diff --git a/core/src/main/java/com/github/games647/fastlogin/core/importer/ElDziAuthImporter.java b/core/src/main/java/com/github/games647/fastlogin/core/importer/ElDziAuthImporter.java
new file mode 100644
index 00000000..1d1de711
--- /dev/null
+++ b/core/src/main/java/com/github/games647/fastlogin/core/importer/ElDziAuthImporter.java
@@ -0,0 +1,32 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.sql.Statement;
+import javax.sql.DataSource;
+
+public class ElDziAuthImporter extends Importer {
+
+    private static final String TABLE_NAME = "accounts";
+
+    @Override
+    public int importData(DataSource source, DataSource target, String targetTable) throws SQLException {
+        Connection con = null;
+        Statement stmt = null;
+        try {
+            con = source.getConnection();
+            stmt = con.createStatement();
+            int importedRows = stmt.executeUpdate("INSERT INTO " + targetTable + " SELECT"
+                    + " nick AS Name,"
+                    + " uuid AS UUID,"
+                    + " premium AS Premium,"
+                    + " lastIp AS LastIp,"
+                    + " FROM_UNIXTIME(lastPlayed * 0.001) AS LastLogin"
+                    + " FROM " + TABLE_NAME);
+            return importedRows;
+        } finally {
+            closeQuietly(stmt);
+            closeQuietly(con);
+        }
+    }
+}
diff --git a/core/src/main/java/com/github/games647/fastlogin/core/importer/Importer.java b/core/src/main/java/com/github/games647/fastlogin/core/importer/Importer.java
new file mode 100644
index 00000000..60944125
--- /dev/null
+++ b/core/src/main/java/com/github/games647/fastlogin/core/importer/Importer.java
@@ -0,0 +1,20 @@
+package com.github.games647.fastlogin.core.importer;
+
+import java.sql.SQLException;
+
+import javax.sql.DataSource;
+
+public abstract class Importer {
+
+    public abstract int importData(DataSource source, DataSource target, String targetTable) throws SQLException;
+
+    protected void closeQuietly(AutoCloseable closeable) {
+        if (closeable != null) {
+            try {
+                closeable.close();
+            } catch (Exception ignore) {
+                //ignore
+            }
+        }
+    }
+}