\enabletrackers[figures.links]

\nopdfcompression

% \showlayoutcomponents

\starttext

\setupinteraction[state=start]

\externalfigure[merge-001.pdf][page=1,scale=700,frame=on,interaction=all] \page
\externalfigure[merge-001.pdf][page=2,scale=600,frame=on,interaction=all] \page
\externalfigure[merge-001.pdf][page=3,scale=500,frame=on,interaction=all] \page

\title{merge-001.tex}

\typefile{merge-001.tex}

\title{merge-002.tex}

\typefile{merge-002.tex}

\stoptext
