"Summary within" modify table entry

[Ainosez]

Hi,
I'm using the "Summary within" tool to get the percentage of a polygon within another. This command creates an output layer and I would like it to modify the input layer because it is a process that I run frequently and with that new field I run more commands. I have tried overwriting that output layer, but even though it does run it, the following processes do not work because the layer disappears. Any ideas?
Thanks

[MervynLotter]

"Summary within" is a script tool that strings together several GP tools in the background. I have previously encountered some issues with it. I prefer to use the Tabulate Intersection tool (Tabulate Intersection (Analysis)—ArcGIS Pro | Documentation) for vector overlays to calculate size and proportions. This is very similar to Summarize within. Do take a look at it to see if it meets your needs.  If you are calculating size, be mindful of choice in projection as the default size calculation in this tool is based on the projection of the layers. If you are using a projection like Web Mercator, rather use a geodesic method to manually calculate size and then sum the size field values from the geodesic calculation.

Unfortunately, it does require an Advanced license.