5

Right-click source & source_copy and choose Model Parameter. This will enable other scripts/models to feed directly into this model. The source will need to be a feature layer, not a feature class. You would need to run a feature class through the Make Feature Layer tool first.


3

I have just spoofed up this model to simulate what you are doing and it all works fine for me! I'm using ArcMap 10.6.1 The Merge takes 3 datasets, one with nothing in it and various M-aware levels, everything merges as expected. This would indicate the source of the problem lies elsewhere. Modelbuilder often seems to hang on to old environment settings and ...


Only top voted, non community-wiki answers of a minimum length are eligible