We have encountered a problem exporting requirements to Enovia. 

• On our initial export (Excel), our compliance field (string value) has some null values. When we open the requirements, everything looks good.
• On a second export, where we have revised some requirements, the null values are now indicating there has been a change, when in fact they have not been changed.

Questions:

• Can anyone advise why this is happening?
• We have not changed the values (in the Excel spreadsheet). Is there a Reqtify setting that needs to be modified?
• Are there any specific settings related to null value handling or export configurations in Reqtify?
• Should the null value cells in excel be populated with ""?

Thank you for you help.