Multiple syncs of one error entry creates multiple entries for valid bookings #56
Description
I had the following problem:
Today, I edited an entry with gtt edit NUMBER. Unfortunately, I made a formatting mistake with the date, therefore, it was not valid any more.
Later, I performed gtt sync. An error message appeared, so I tried it again.
While looking for the error, I synced again several times to see if I solved the problem. After finding the wrong entry and editing it to be correct, I synced again, and no error was reported.
When creating the report, I saw that all the valid entries were synced every time I performed gtt sync. Therefore, I had to calculate the time difference for each issue and correct it manually.
I think after an entry is synced, it should not be synced again, only the one that was corrected in order to prevent wrong time bookings.