If you want to combine two logs into a single one, you can merge the logs so that all the values that don’t exist in one log are copied to it from the second log.
In this example, we will be adding the forestay tension value from the “Cyclops Marine” sensor’s file into another log.
To do this, open the log you want to copy into first.
![](https://i0.wp.com/ib-sailing.com/wp-content/uploads/2023/05/Screenshot-2023-05-22-at-11.00.29.png?resize=512%2C283&ssl=1)
Open the log from which you want to copy the values. (Cyclops Marine one in this case)
![](https://i0.wp.com/ib-sailing.com/wp-content/uploads/2023/05/Screenshot-2023-05-22-at-11.00.41.png?resize=512%2C288&ssl=1)
Choose Menu/Log/Merge
![](https://i0.wp.com/ib-sailing.com/wp-content/uploads/2023/05/Screenshot-2023-05-22-at-11.00.56.png?resize=434%2C402&ssl=1)
The dialog screen will appear, showing which values will be copied. If you have selected the logs in the wrong order, you can use “Swap Logs” to swap which log gives and which receives the values.
![](https://i0.wp.com/ib-sailing.com/wp-content/uploads/2023/05/Screenshot-2023-05-22-at-11.01.52.png?resize=512%2C269&ssl=1)
Click OK and values will be added to the first log.
Make sure you select the whole timeframe and save the log so that changes are saved. You can add optional comments (“has forestay tension” in this case).
![](https://i0.wp.com/ib-sailing.com/wp-content/uploads/2023/05/Screenshot-2023-05-22-at-11.03.41.png?resize=271%2C275&ssl=1)
After saving, you can delete the opened original logs and use the newly saved ones in the future.
![](https://i0.wp.com/ib-sailing.com/wp-content/uploads/2023/05/Screenshot-2023-05-22-at-11.04.09.png?resize=512%2C341&ssl=1)