Yes, the change you made to my code works.
Thank you!

>>Hi,
>>
>>I found a problem when updating one cursor from another, using SET RELATION approach. The names are:
>>TARGET cursor is the one being updated
>>SOURCE cursor is the one from which the data is taken for update
>>
>>

>>CREATE CURSOR TARGET (pk_field i, task_no n(6,0), week_fr n(6,0), week_to n(6,0), week_no n(6,0), employee c(10) )
>>INSERT INTO TARGET (pk_field, task_no, week_fr, week_to, week_no, employee ) VALUES ;
>>	(1, 10, 1, 52, 4, '')
>>INSERT INTO TARGET (pk_field, task_no, week_fr, week_to, week_no, employee ) VALUES ;
>>	(2, 10, 1, 52, 4, '')
>>INSERT INTO TARGET (pk_field, task_no, week_fr, week_to, week_no, employee ) VALUES ;
>>	(3, 10, 1, 52, 4, '')
>>
>>SELECT TARGET
>>INDEX ON pk_field TAG pk_field
>>SET ORDER TO TAG pk_field
>>
>>*--  create SOURCE cursor
>>CREATE CURSOR SOURCE (pk_field i, task_no n(6,0), week_fr n(6,0), week_to n(6,0), week_no n(6,0), employee c(10) )
>>
>>INSERT INTO SOURCE (pk_field, task_no, week_fr, week_to, week_no, employee ) VALUES ;
>>	(5, 10, 1, 52, 4, '')
>>INSERT INTO SOURCE (pk_field, task_no, week_fr, week_to, week_no, employee ) VALUES ;
>>	(2, 10, 1, 52, 23, '')
>>
>>SELECT TARGET
>>SET RELATION TO PK_FIELD INTO SOURCE
>>GO TOP 
>>replace week_no WITH SOURCE.week_no, week_fr WITH SOURCE.week_fr, week_to WITH SOURCE.week_to  all
>

>
>

>REPLACE ALL week_no WITH SOURCE.week_no, week_fr WITH SOURCE.week_fr, week_to WITH SOURCE.week_to FOR NOT EOF('source')
>

>
>

>>BROWSE TITLE "TARGET after update" 
>>

>>
>>Note that above, because the SOURCE has fewer records than a TARGET (real case), the last record
>>of the TARGET is set to 0 (zero) all fields.
>>
>>Is this how the code is supposed to work or I am doing something wrong?