It is possible to transfer recurring items in to AutoTask from QuoteWerks and then change the monthly period as shown below .....
It would be good if the actual contract terms (ie. the Contract Start Date and Contract End Date) could be transferred across into Auotask also.
Not currently, but I have raised this with QW each time it has been raised with me.
I believe the field used not to be available with the AT API, but now is.