If you cannot see memo data for the records after 17 in the FPT file in the Hex editor than it's gone. In order to restore corrupted memo file you'll need backup of the table before corruption.

>I have a corrupt FPT file that I cannot repair. The DBF that is associated with it has 52 records of information. I’ve pin-pointed where the corrupted fields are. I have a memo field with the name “mplacement”. There are exactly 4 so called “corrupted” records in the mplacement field. The corruption starts at record 18. Records 18 – 21 seem to be the corrupted ones. Records 1 – 17 seem to display information correctly. When I export the information from this DBF into an XLS, it only goes to record 17 and then quits, leaving the rest of the records out. When I open the FPT with a Hex Editor, the data displayed ends with record 17, like there is no more data.
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>Here’s the tricky part. When I open the application and go into 4 records (other than the 4 corrupted ones) and enter data into that mplacement memo field, it magically fixes the FPT and I don’t get the “Error 41, Memo file is missing or invalid” anymore. When I open the FPT back up in a Hex Editor, it shows me records 1 – 17 and my newly added data for the 4 entries at the bottom. I still can’t seem to recover all of the data from the memo field from records 18 – 52. I’ve got backups (at the time of corruption) of the DBF and FPT so I can try anything. Any help is much appreciated.