求助：关于逻辑图生成pcb的问题

LCconan

逻辑图第一次进行ECO TO PCB 没有任何错误和警号，但是我什么都不改再点一次ECO TO PCB就会出现很多警告：
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Line 15 , Section *DEL_ATTRIBUTE*
"Comment"
) Z5 C/ V; H3 Z/ Y/ Z* WARNING: Processing command to delete attribute "Comment" from Component J2.
& ~) h6 l3 j" O/ j*          The attribute is also inherited from Decal AUD_JACK_6PIN.
*          The change is not fully reconciled for cases where the schematic
& D0 N# Z) X, I- V2 F8 ~. A*          does not support hierarchical attributes.
$ ?  f8 z/ P% k: U( W* LLine 17 , Section *DEL_ATTRIBUTE*
) `  m' m* m/ |$ ^"Comment"
* WARNING: Processing command to delete attribute "Comment" from Component BT1.
*          The attribute is also inherited from Decal HB414--II06E(RTC).
% W- d% Q9 t0 ^+ Y*          The change is not fully reconciled for cases where the schematic
*          does not support hierarchical attributes.
5 o8 O5 M3 D& z( n2 J4 C# V$ u( ?Line 19 , Section *DEL_ATTRIBUTE*
"Comment"
* WARNING: Processing command to delete attribute "Comment" from Component J5.
* ?4 u, N" [; c: B& D+ ?' {*          The attribute is also inherited from Decal BAT_HEADER1.
*          The change is not fully reconciled for cases where the schematic
*          does not support hierarchical attributes.

" H# k$ H7 n% _6 U9 T警告有700多个，但都是像上面一样的，想请教是什么原因
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