I opened the file in a text-editor and saved it as csv. I will try libre office. if it doesn't work out I will send you by email.

 Is this email fuelio@sygic.com the right one?

I have a problem as follows:

- I have a vehicle in which I have data for 2012 to 2015, I didn't enter for 2016, I recently started again in 2017. 

- I exported the csv to my google drive.

- I manually edited csv on my computer and uploaded into Google drive (format matches perfectly)

- I goto fuelio app on android and try to import.

- It does not show the files from google drive.

- If I export a file and it appears on google drive with new timestamp.

- And if I try import, the new file just exported from fuelio is only available to import. 

- My changed csv file is not available for import.

Please help. Thanks.