Is it possible to update the source of a layer within an mxd using arcpy mapping?

[RichardGeoghegan2]

I have an mxd which contains a layer (in shapefile format).

I wish to update the path of the shapefile to the path of another shapefile by using a stand alone script.

Is this possible? 

I have used arcpy.mapping.AddLayer to find my layer.

I wonder if I can now use .replaceDataSource to update the source of the layer in the mxd?

[DanPatterson_Retired · Accepted solution]

Did you try it and it didn't work?

Not sure what the problem is unless you don't have the files anymore to try.

Look at UpdataLayer which essentially does a remove and add

replaceDatasource etc 

[RebeccaStrauch__GISP]

You can also check to see if any of the tools in my addin will work.  I mainly works on broken links but can be adapted to work with any.

/blogs/myAlaskaGIS/2015/08/31/python-addin-for-data-inventory-and-broken-link-repair?sr=search&searc...‌