Downgrading from Xray 5.x to a version less than 3.2.0 implies that you must perform a re-index afterward. This is because from Xray 3.2.0 onwards, the content and format of what Xray indexes have changed.

• Test parameters will no longer be converted on the Test Run page, this includes Test steps and Pre-Conditions
• When loading a Test Run created on version 5.x.x, the merge/reset message will be displayed
• When merging a Test Run created on version 5.x.x with the new test step definition, all step results will be updated but the reset/merge message will still be displayed
• A Test Run created on version 5.x.x with iterations will be displayed in a "flat mode". The iterations will no longer be available and all the step results from each iteration will be presented on the Test Steps section.
  
• After the downgrade, the integrity checker will fail on " Check for invalid Mementos" for all Test Runs created on version 5.x.x. We recommend running the integrity checker before downgrading so we can get rid of possible invalid mementos.