sum87 memo fields do not replace. HELP

[Guest_imported]

I use sum87.
when main database enlarged I am transfering some data to archive.dbf.
I did not changed the code. But nowadays on this transfer, there is not a problem on dbf fields but memo fields are empty.
Please help

 

[Guest_imported]

I found a problem.
Theoritically clipper can use 1 billion records.
But I found that in my application, it can use up to
approx. 37600 in memo fields
After this reccount it can not hold memo fields data.
dbf file has no problem.
This may be usage off addresing memofields in dbt file.
I dont know Why.
May be problem is Windows operating system.
OR pentium. Because 376xx is half of integer limits.
Is there any comment about this problem.