I understood your problem, I just want to check - are you able to copy and paste data from citrix app to your local machine?
Previously, I dealt with similar situation where I had taken below approach.
- Opened Excel sheet in citrix - through key strokes copied data.
- Opened new excel sheet locally, then pasted data
- Updated data in local excel sheet
- Copied data from local excel sheet using key strokes (Ctrl + c)
- In Citrix - Selected all data in excel sheet using key strokes (Ctrl + a)
- Pasted data in citrix excel through key stroke (Ctr + v) and saved excel (Overwritten data with updated data)
Hope this approach will also work for you if copy and paste allowed in local machine.