Borgus1,
I only know of a couple ways to re-combine a clip that has been split:
1. You can use the UNDO function (Ctrl+Z) or on the top of user interface immediately after splitting.
2. You can drag the original clip to the timeline. (This will undo all edits done to that clip)
3. You can load a previous project file (pds). That was before the split.
4. Produce the project, that will combine everything into one video.
Or you can leave the clip in its current split condition, when you produce the project, you would not know there was ever a split put in the clip. Provided you have not removed any part of the clip at the split.
Splits can be starting and ending points for effects.
Carl312: Windows 10 64-bit 8 GB RAM,AMD Phenom II X4 965 3.4 GHz,ATI Radeon HD 5770 1GB,240GB SSD,two 1TB HDs.