关于ORCAD和POWER PCB间的同步

今天用PCBNAVIGATOR进行ORCAD（V9.0）和POWER PCB5.2的同步发现一个问题，请教高手。

我是修改别人做的PCB，并不是做一个全新PCB,

同步完后，生成的POWERPCB.REP报表出现如图错误：

图片怎麽传不上去，算了我还是复制过来，如下：

*PADS-ECO-V3.0-MILS*
*REMARK*  old file: E:\GPS\601\601-V1.0\ppcbnet.asc

*REMARK*  new file: E:\GPS\601\601-V1.0\601-V1.0-061020.asc
*REMARK*  created by ECOGEN (Version 6.1b) on 2006-10-23 16:35:08

PART DIFFERENCES
----------------
OLD DESIGN                                        NEW DESIGN
Ref-des art-typeecal                           Ref-des art-typeecal

NET DIFFERENCES
----------------
OLD DESIGN                                        NEW DESIGN
<none>                                            A0
<none>                                            D0
<none>                                            D12
<none>                                            D3
<none>                                            D6
<none>                                            D7
<none>                                            D9
<none>                                            N17092885
<none>                                            N17093062

SWAPPED GATE DIFFERENCES
------------------------
OLD DESIGN                                        NEW DESIGN

SWAPPED PIN DIFFERENCES
------------------------
OLD DESIGN                                        NEW DESIGN

UNMATCHED NET PINS IN OLD DESIGN
--------------------------------
3V3                 U7.2 
A0                  U7.3 U3.5 
BT                  U7.1 
D0                  U3.13 U7.4 
D12                 U3.30 U7.7 
D3                  U3.24 U7.6 
D6                  U3.40 U7.8 
D7                  U3.37 U7.9 
D9                  U3.15 U7.5 
N16800722           D107.A 
N17092885           R110.2 D106.K 
N17093062           R11.1 D107.K 
VUSB                D106.A 

UNMATCHED NET PINS IN NEW DESIGN
--------------------------------
3V3                 U7.02 
A0                  U7.03 U3.5 
BT                  U7.01 
D0                  U7.04 U3.13 
D12                 U7.07 U3.30 
D3                  U7.06 U3.24 
D6                  U7.08 U3.40 
D7                  U7.09 U3.37 
D9                  U7.05 U3.15 
N16800722           D107.1 
N17092885           D106.2 R110.2 
N17093062           R11.1 D107.2 
VUSB                D106.1 

ATTRIBUTE DIFFERENCES
---------------------
Attribute Level [ OLD DESIGN Parent -> NEW DESIGN Parent ]

          Attribute Name           Old Value                New Value

上面红颜色 部分NET DIFFERENCES 中出现机构网络对不上，报表表明在POWER PCB中没有 A0，D0，D12，D3，D6，D7， D9，N17092885， N17093062 网络，但是我特意看了POWER PCB,这几个网络是有的，不知是什麽原因引起的，今天下午折腾的一下午，还是这样，请高手指点一下，

是不是allegro随机生成的?

我没有用allegro画PCB,用的是POWER PCB5.2,报表是我在从ORCAD到POWER PCB的正向标注是生成的。