64-bit Conversion

[maverick786us]

I have an existing .NET library, which I converted it into 64-bit by using by simply going into Configuration Manager>Platform and selected X64. Now while compiling I see these warnings

D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(255,24): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'
D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(258,21): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'
D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(269,24): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'
D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(281,46): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'
D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(289,24): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'
D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(304,24): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'
D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(307,21): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'
D:\Maverick\Projects\Lexus\SRC\AuthFilter\AuthFilter11\Config.cs(323,24): warning CS0618: 'System.Configuration.ConfigurationSettings.AppSettings' is obsolete: 'This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings'

Is it safe to ignore these warnings? Will this create while working in 64-bit servers?

[Omegadarkest]

Why not make the corrections?

[maverick786us]

Why not make the corrections?

Resolved all the warnings. But one warning still remains

Warning	1	Assembly generation -- Referenced assembly 'mscorlib.dll' targets a different processor

Now this DLL is not displayed in reference therefore if I add reference and select the same DLL present in .NET 64 folder it says that one reference is already present. So how can I dereference this old 32-bit version?

Thanks in Advance