I have 2 adsense accounts, one by my name and one by company name.

Reason I have is that I started with personal account then
I started the company and started also adsense account
for my company.

Problem is that having a lots of sites I have not moved them
all already from person to company account.

Now, because of financial business, I would like to move the
sites back in personal account.

But in the future, I might be interested in moving them
again in the company account.

My question is what are the issues with moving sites from
one account to an other.

So far, I only noticed that upon moving a site, I get fewer mony
but is only an observation I have, I am not sure if this is
100% correct.

I would like to hear some other opinions from people that
had same experience.

smartpricing

Change Your Adsense codes. Thats all.

yep, well I decided to keep only one account, this is best and simplest
solution. I know smartpricing - I felt it directly.

Also what I strangely found is that page impressions also get diminished when moving from one account to other account.

In time, it gets regulated ... both impressions and income.

first how much are you earning from adsense. It's always better to keep on account since your money gets distributed and also do no play around a lot with it . Google enjoys banning people for any reason