pagination of results post-processed with afterFind

v1.3 Does anyone have experience of pagination of results that have been subjected to some processing in afterFind() ?

Although the structure of my returned data is identical, bar the addition of two calcula开发者_StackOverflow中文版ted pseudo fields, all of the pagination data seems to have been lost.

Google searches lead to dead-ends.

Sorted - I'd stripped out the empty arrays that, it turned out, are used by pagination