Merge pull request #22348 from mantidproject/22347_converttomd_use_pointer

Fix ConvertToMD with workspace pointer input

Framework/MDAlgorithms/src/ConvertToMD.cpp

@@ -667,10 +667,10 @@ void ConvertToMD::findMinMax(
     throw(std::runtime_error(
         "Can not create child ChildAlgorithm to found min/max values"));
 
-  childAlg->setPropertyValue("InputWorkspace", inWS->getName());
-  childAlg->setPropertyValue("QDimensions", QMode);
-  childAlg->setPropertyValue("dEAnalysisMode", dEMode);
-  childAlg->setPropertyValue("Q3DFrames", QFrame);
+  childAlg->setProperty("InputWorkspace", inWS);
+  childAlg->setProperty("QDimensions", QMode);
+  childAlg->setProperty("dEAnalysisMode", dEMode);
+  childAlg->setProperty("Q3DFrames", QFrame);
   childAlg->setProperty("OtherDimensions", otherDim);
   childAlg->setProperty("QConversionScales", ConvertTo);
   childAlg->setProperty("PreprocDetectorsWS",

docs/source/release/v3.13.0/framework.rst

@@ -51,6 +51,7 @@ Bug fixes
 - The documentation of the algorithm :ref:`algm-CreateSampleWorkspace` did not match its implementation. The axis in beam direction will now be correctly described as Z instead of X.
 - The :ref:`ExtractMask <algm-ExtractMask>` algorithm now returns a non-empty list of detector ID's when given a MaskWorkspace.
 - Fixed a crash when the input workspace for :ref:`GroupDetectors <algm-GroupDetectors>` contained any other units than spectrum numbers.
+- :ref:`ConvertToMD <algm-ConvertToMD>` can now be used with workspaces that aren't in the ADS. 
 - Fixed :ref:`SumSpectra <algm-SumSpectra>` to avoid a crash when validation of inputs was called with a WorkspaceGroup.
 
 :ref:`Release 3.13.0 <v3.13.0>`