I have created an Enhancement Request to see if this can be sorted. Anyone else want to back it?
|ER (Enhancement Request) Details|
Retain text in Custom Properties when pasted in as not plain text.
Product Version in Use : SW2015
Explanation : Pasteing text into Custom Properties pane that is not plain text is lost on Apply. You have to
repeat the effort in the File>Properties>Custom/Configuration Specific panes where it is
changed to plain text.