This usually happens when the Track-It! Audit detects a different Mac address than the original scan. This can happen with Wifi adapters vs. Ethernet adapters or a network adapter that has been replaced and can also be complicated by routers and switches that cause the audit to get their Mac address instead of the computer. Do a scan of that 1 asset, then merge, then sort your Assets by Audit Date and check the system that has the most recent updated audit date. It is likely you have a duplicate for that system or that systems information is merging into a different record because of an issue detecting the Mac Address properly. Less likely causes are things like multiple Track-It! installs and the audit pointing at a different install than the one you are currently using or license violations that cause the merge to stop merging in new audits.