Table issue

Dear all,
after 3 years im trying again with Basic4pcc, i have an old project
which i need to rewrite.
starting up again, i facing the issue with tables, after filling up with
new data seems fine, but after table1.clear and fill up again the table
is not empty its add data the the current rows
like i have 1940 files, after changing folder with 3 files, i have after clear
the table 1943 files in the table?
how can i solve.
thanks a lot.