Issue with Reading XML file in Stage File for multiple records

Summary

Issue with Reading XML file in Stage File for multiple records

Content

Hi,

Using for loop I am filtering some repeated XML element and writing into XML File (With Append Checked). Writing is working fine But issues happening while trying to read that file back-

-> Reading single record works fine (when I don't include append during Write)

-> Error reading multiple records (when append is checked during Write): It seems it's breaking the format while appending the XML records

Fault Details : 
<summary>The &lt;from> value is invalid.
Xpath expression associated with &lt;from> in copy assign activity is invalid.