When dealing with the water jet, it is found that the areas displayed on the tile laying page for the first and second imports of the water jet are different, and there are cases of area omission. We can handle it in the following steps:

1. After importing the water jet file to the tile laying page multiple times, confirm the omitted areas after the import.

2. Return to the CAD interface, then move the lines that have been processed and imported without problems to the right, leaving the lines of the area with processing problems.

3. Enter the X key to break up the remaining area with import problems, and re-enter the IPP shortcut key to convert the lines in this area into polylines

4. Move the processed area lines back to the previously processed area on the right, and then enter the MY shortcut key for converting it to a region for processing.