IRE merges by source_recency_timestamp and does not combine relationship data from multiple discovery sources<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } span { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } h2 { font-size: 24pt; font-family: Lato; color: var(--now-color--text-primary, black); } h3 { font-size: 18pt; font-family: Lato; color: var(--now-color--text-primary, black); } h4 { font-size: 14pt; font-family: Lato; color: var(--now-color--text-primary, black); } a { font-size: 12pt; font-family: Lato; color: var(--now-color--link-primary, #00718F); } a:hover { font-size: 12pt; color: var(--now-color--link-primary, #024F69); } a:target { font-size: 12pt; color: var(--now-color--link-primary, #032D42); } a:visited { font-size: 12pt; color: var(--now-color--link-primary, #00718f); } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } Issue When multiple discovery sources create CIs with the same identification attributes but different relationship data, IRE merges based on source_recency_timestamp. The newer payload wins entirely and relationship data from the older source is NOT combined. Symptoms CI loses relationship data after a second source updates itData center, hosted-on, or other relationships disappear after IRE mergeDuplicate CIs appear when sources run at different times with different relationship data Cause IRE uses source_recency_timestamp to determine precedence. The newer payload wins entirely — IRE does NOT combine relationship data from multiple payloads. If Source A created the CI with relationships at time T1, and Source B submits without those relationships at T2 (T2 > T1), the relationships from Source A are discarded. Resolution Ensure all sources include the same relationship data in their payloadsCoordinate run order so the most complete source runs lastReview sys_object_source to identify contributing sources and timestampsInvestigate source payload construction if relationships are being strippedConsider containment rules or reconciliation rules to control source precedenceThis is by design — IRE does not have field-level merge across sources