Guilin Sun
Ansys Employee

Unfortunately it is difficult to load ldf data into the Global deck as it only accept save dcard data. You can use  zbf data: https://optics.ansys.com/hc/en-us/articles/360034928293-zbfwrite-Script-command

I tried and it works.

You can also use script to calculate the overlap as you have already the elliptical beam data. What you need is to get the mode fields:

E=getresult("mode1","E");

H=getresult("mode1","H")

and then get components, and follow this link for the formula: https://optics.ansys.com/hc/en-us/articles/360034405254-overlap-Script-command