Thank you very much for the replies. With that, I searched into this forum and found out that the same question was asked in June 2011. Answer to that was; Cause an Italian promoter run away with cash of LOG tour in 1983.... so they don't want risk same thing again in 1985.....
And then added;
yes about LOG tour
and for the same reason they were paid in advance for the OES tour
Interesting I think. Would love to find a source/article where that is mentioned.