Converting a single file
To convert and open a single file:
1.
If the file you want to convert is currently open in the previous version of FileMaker Pro, close the file.
If you attempt to convert a file that is currently open, an alert message will appear indicating that the file is already in use, and the file won’t convert.
2.
Start FileMaker Pro 10.
3.
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4.
5.
Note  You can also begin conversion by dragging the file onto the FileMaker Pro 10 application icon.
The Conversion dialog box appears, where you can choose to rename the existing file prior to conversion. By default, FileMaker Pro renames the file by adding “Old” to the filename.
6.
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Skip renaming the old file by clearing the Rename old file checkbox and clicking OK. It’s not necessary to rename the old file if it has an .fp5, .fp3, or .fmj extension because your converted file will have an .fp7 extension. On Windows, the filename extension .fp7 is added to all converted files.
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Rename the old file by entering the name you want and clicking OK. Do this if you’re using Mac OS, the file does not have an extension, and you want to continue using the existing filename for the converted file.
The Name Converted File dialog box appears.
7.
If you renamed the old file in step 6, the default filename for the converted file is the original filename (with a .fp7 extension, if the original file had an extension). If you did not rename the old file, the default filename is filename Converted.
8.
Click Save to start the conversion.
During a prolonged conversion, the File Format Conversion dialog box will appear and show the conversion progress. If a file being converted contains indexed fields, you can save time by clicking Skip when the index is being re-created, which postpones indexing until later.
In most cases, FileMaker Pro converts the file and opens it.
9.
Using a text editor such as Notepad (Windows) or TextEdit (Mac OS), open the Conversion.log file located in the folder that contains your converted database.
The Conversion.log file contains a journal of the conversion process that you just completed. Much of it contains status messages that indicate the different file components that were converted. But it also may contain error messages that indicate areas where you may need to make manual corrections to the converted file before testing it further.
Related topics 
Solving basic conversion problems
Reading the Conversion.log file