[ic] Nest if error?

[murahashi]

I moved one of my sites from IC4.6.4 to IC4.8.6, perl5.6.0.

I have a problem on IC4.8.6.  The problem is an error at my pricing display
in results.html like below.
3,597Yen?4,497Yen [/else][/if-item-data]

But, the same <<<code>>>  is working at the pricing display in flypage.html.
3,597Yen?4,497Yen

Of course, both are working well in results.html and flypage.html on
IC4.6.4.

<<<code>>>
[if-item-data discountprice price][discount [item-code]][item-data
discountprice price][/discount]<font color="red"
size="1"><b>[currency][item-data discountprice
price][/currency]</b></font><font __FFACE__ size="1">?<S>[price
code="[item-code]"]</S></font>
[else][if-item-data pricing price]<font __FFACE__ size="1">[price
code="[item-code]"]</font>[else]Quote[/else][/if-item-data][/else][/if-item-
data]

Am I wrong or change of IC tag syntax ?
Any suggestion would be help.
Thank you.
Murahashi