>Thanks Naomi, when i open my local files, i do that using by example use orders (default use directory is c:\data) but when opening external files i use: use x:\statistics\orders alias est_orders, program performs both updates on orders and est_orders, then it closes est_orders and try to continue working with orders but it didn't show up. Default database is c:\data\main.dbc

Perhaps you need

use in select('est_orders') && to make sure you closed the external table and not your main Orders.

Can you also please provide some code, so we can see, what's wrong.