Hans,

PLEASE take a look at

\placetable and fix numbering so that when a long table is split the  
numbering is:

1
1 (continued)
1(continued)

and while you are there could we get :

open header on top of continued table and footer that states:

table continued

just like LaTeX \longtables

Here is a minimal example for Hans, which shows correct numbering for split  
tables
which is currently wrong for MkIV:

\setuppapersize[A7][A7]

\starttext

\placetable
[split]
{Test 1}
{\bTABLE
\dorecurse{20}{\bTR\bTD #1 \eTD\eTR}
\eTABLE}

\placetable
{Test 2}
{\bTABLE
\bTR\bTD 1 \eTD\eTR
\eTABLE}

\stoptext

THANKS

barney