KB #240023: DBF becomes decrypted after xBase PACK command

1. USE original-file
2. COPY TO temporary-file FOR .NOT. DELETED()
3. DELETE original-file
4. RENAME temporary-file TO original-file

In this process, original-file might become decrypted because PACK actually creates a new file. You can avoid this in a couple of different ways:

• If you have created a profile using the GUI or CLI, make sure you have selected the “Encrypt new files” option.
• Alternatively, turn on N_ENCODENEW before PACKing. E.g.,* turn on "encrypt new files" and save current setting
nCurrent=N_ENCODENEW(1)
PACK
* restore original setting
N_ENCODENEW(nCurrent)