What is the path to your company data file?  You can find this under File, Properties.

It sounds like you might be using the file directly from a DropBox or OneDrive location.  This should not be done.

Also, look at the backup location under Setup, Settings, Company, Backup and see if you have been sending the backup to the *.saj folder.  If you are , please change it and check if any *.cab files are in the *.saj folder.

Hi Richard,

Thanks for your reply !  You are right i did using the file directly from dropbox. and backup location is dropbox also. There is no .cab files are in the .saj folder. what is the better way to resolve the problem. Do i need to uninstall the new version sage and reinstall it . Is there possible I can keep the new entries input. Please let me know your advise.

Thanks again for your assistant

Lisa

Using you file directly from the DropBox is not supported.  As you found the DropBox system does not know how to track the data properly so it duplicates it as it is being used.  I've never manually recovered a file that was used in a DropBox but my first thought would be to copy

I personally would not be backing up directly to the DropBox either.  I would back up to my hard drive, then copy the back up file to the DropBox under the scenario I believe you are running.

Without going through a data repair process, I would try copying the *.sai file and *.saj folder to your hard drive to a temporary location like c:\Temp.  Then create a location like c:\Sage50Data on your C: drive.  Open the file in Sage 50 from the Temp location and select File, Save As and save the file in the c:\Sage50Data folder.

Then while the file is open and your File, Properties indicates you are using the file in the Sage50Data location, check the *.saj folder in Sage50Data to see if the ib* files are duplicated still.  I believe they will still be there. If they are, you may should be able to move the duplicated files that indicate "Lisa's conflicted copy....." to another location temporarily.

Once the duplicated files are removed and the file structure looks more like Article 12444 under Method X (with some other text or log files, process.pid, etc.), you should be able to close the file and open it again without error.  When you backup to your hard drive now, you should get a reasonable size backup of about 15-20 meg (based only on the 80 entries you said you added) depending on your original file size and how many years you used it before upgrading.

Because you just upgraded, you may be able to get Sage Tech support to help you out but 2019 went end of life back in March so they may not support it anymore.  I can' say for sure because I don't work for Sage.  If you are unsure about doing this then you should be talking with a consultant to help you out.

If the future, work on your hard drive, then copy the backups to DropBox.