Updated Signatures (markdown)

Signatures.md

@@ -28,11 +28,28 @@ If there are other DAT's you'd like to see support for, please raise an issue wi
 2. Extract the archive
 3. Copy the file name ``MAME 0.257 (mess).dat`` files to ``~/.gaseous-server/Data/Signatures/MAME MESS/``
 
+> **_NOTE:_** In Gaseous versions prior to v1.7.6 there was a bug where MAME and MESS DATs would not import correctly. If DATs were imported prior to v1.7.6, they may be incomplete.
+>
+> To resolve this, the record of having imported the DAT needs to be deleted:
+> * Upgrade to 1.7.6 if you have not already done so
+> * Navigate to the Swagger API page. This will be ``http(s)://<your host>:<your port>/Swagger/``
+> * Scroll to the section called ``Signatures``
+> * Expand the row with the end point ``/api/v1.1/Signatures/GetSignatureSources``
+> * Click "Try it out"
+> * Click "Execute"
+> * In the responses section a row with the code 200 should appear
+> * Find the entries with the ``sourceType`` set to ``MAMEArcade`` or ``MAMEMess`` and take note of the id for each
+> * Expand the row with the end point ``/api/v1.1/Signatures/DeleteSignatureSource``
+> * Click "Try it out"
+> * Enter the id of the first source to delete and click "Execute"
+> * Repeat for each id to delete
+> * Once complete, follow the instructions above (https://github.com/gaseous-project/gaseous-server/wiki/Signatures#adding-signature-dat-files-to-the-local-database) to re-import the DATs.
+
 # Other Signature Sources
 
 **Note:** This is still experimental.
 
-## Hasheous
+## Hasheous (removed in v1.7.3 and will return in v1.8.0)
 
 Hasheous is an open source project that provides an API that Gaseous can access to match a ROM hash to a game title. It also (at the time of writing) provides IGDB match information for hashes that have been submitted before. This can result in a much faster match when importing ROMs. See: https://github.com/gaseous-project/hasheous