Infinite scroll doesn't seem to work when reusing a grid which previously hit the end.... Makes sense that the callback would stop triggering if the listener is unregistered or something, but how to make this work?

I have a search form with some parameters in, i click search and then it queries the database and returns results which are put into this grid. I do a search, look at the data/scroll etc, then do another search. The data in the grid is wiped and the new data put in. (I.e. using same grid) - from this I notice 2 problems:

1. When I perform a second database search the scroll position does not reset to the top – and without using a new directive (cellNav) to scrollTo, I don’t know how.

2. Similar to this, infinite scrolling seems to stop working when you do a new search.

Is there a way to recreate the DOM element, or get the grid refreshed (do it's initialization and call registerGridApi again)?