I believe they have a lot of misspellings in the paper. Sometimes they talk about HESLO, than HELO on the same page. May be it comes from messy "copy, paste and mixing" from and with other sources. (charts and text by different authors???)
Cycle: A cycle is a flight from site A to site B with an external load and the subsequent return to site A.
What if load and sling are dropped on site B? 0,5 cycles?