Mergers and acquisitions advisers need to pay more attention to post-merger implications when embarking on deals, according to the latest report from KPMG Consulting, which examines the difficulties companies face in the mergers and acquisitions process.

The report, written by John Kelly, head of KPMG Consulting's merger integration team, surveys 50 companies that underwent crossborder M&A deals between 1996 and 1998. The findings show that 66% of those companies are showing signs of undergoing a second integration process, as the first stage had not done enough. The survey notes that few companies report on their deals' success, implying that they are either not tracking the success of the transactions or that they are failing to deliver the value.