Absence evidence Tier 1 when a business does not exist

[HelpThisPerson]

Hello,
This clause on page 22 of the "ILR continous periods"
https://www.gov.uk/government/uploads/s ... .0_EXT.pdf

"Tier 1 (General) applicants who are self-employed or in business must provide a letter of explanation of their business-related absences.
However, time spent away from the UK for extended periods, particularly if the business no longer exists, would not be allowed."

This clause seems to be a bit tricky for Tier 1 applicants who at one point of time contracted through their own limited company but later shifted to a permanent employment and the limited company does not exist anymore? Or am I interpreting it wrong?