Hello Ladies and Gentlemen,
I managed to make an export of parameters from Revit to excel via Dynamo. Everything exports as it should. However, when I try to import the data back into the Revit, it messes up my Mark and there fore the rest of the parameters. I cannot pinpoint the problem and was hoping someone here could help me out. I have the revit files and two dynamo files in the link below 
https://drive.google.com/drive/u/0/folders/0B1iUYxQHW9uQcUlCN19vaUhVcWs
Any help would be very appreciated