Am 18.04.2013 um 18:51 schrieb H. Özoguz :

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I can’t reproduce the problem, the text on the second page stays on the grid.

Wolfgang Sorry, my fault, wrong number in \dorecurse. Now you can reporduce it, I think.

\setuplayout[grid=yes] \showgrid \setuphead[subsection] [after=\vskip-1.6mm, before={\testpage[5]\vskip1.6mm}]]

Don’t use such odd values for the spaces before/after the heading which don’t make sense when you use the grid. When you have a heading with more text or a bigger font size try to change the value for the grid-key in \setuphead. Wolfgang