Test Cycles form the core of the Testing environment/process. They serve the purpose of actual tracking of a testing process in Execution results along with details like Estimated Time, Actual Time, etc. The Test Cycles are linked with Test Cases that carry the primary level data.
Note: QMetry Test Management for Jira uses Jira’s native editor and some characters like backslash used in the wiki markup body become unusable by default. This is a technical limitation from Jira's end. As a workaround, we would suggest you use the 'Code' from the rich text editor to mention any text containing backslash.