Move release notes that were meant to be in v6.13

Author: sf1919

docs/source/release/v6.12.0/Framework/Python/New_features/38684.rst

@@ -143,6 +143,8 @@ New features
 - ``Instrument.getFilename()`` and ``Instrument.setFilename()`` have been exposed to python.
 - A new method named ``getFittingParameter`` has been added to ``Mantid::Geometry::Component`` class and exposed to
   python. This allows access to fitting parameters from components in an instrument definition file.
+- Exposed ``ExperimentInfo.populateInstrumentParameters`` to the Python api.  This will facilitate the update of parameterized
+  instruments from Python, allowing parameters to be directly transferred as properties without converting to and from ``string``.
 
 Bugfixes
 ############

docs/source/release/v6.12.0/Muon/ALC/Bugfixes/39442.rst

@@ -5,6 +5,13 @@ Muon Changes
 .. contents:: Table of Contents
    :local:
 
+ALC
+---
+
+Bugfixes
+############
+- :ref:`ALC interface <MuonALC-ref>` no longer crashes when non numeric characters are input in Backward and Forward Grouping line edits.
+
 Muon Analysis
 -------------