are you sure it's recurring and not non-recurring ?
Did you check if the element set up. Is the element end-dated? Or is the link end-dated?
Thanks for your answers :-)
the element was recurring
and the element wasn't end-dated
but the business had had some issues with the element links for some of the subjectives being created wrongly, so that might have been it...
however when i checked the formula, I had a STOP return result where I didn't need one, - so the formula was 'ending' the element entry for the pay period... so I took the STOP processing and the STOP formula result out, and more testing had the element entry recurring as we would expect...