Import-Module works only when piped from Get-Module - powershell

Question

I wrote a simple PowerShell module. I need to keep more versions of the module. All paths to versions are added to $env:PSModulePath. I'm facing strange problem when importing the module to my session.
This fails:
Import-Module Contoso.PowerShell -RequiredVersion "0.0.2"
Import-Module : The specified module 'Contoso.PowerShell' with version '0.0.2'
was not loaded because no valid module file was found in any module directory.
At line:1 char:1
+ Import-Module Contoso.PowerShell -RequiredVersion "0.0.2"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ResourceUnavailable: (Contoso.PowerShell:String) [Import-Module], FileNotFoundException
+ FullyQualifiedErrorId : Modules_ModuleWithVersionNotFound,Microsoft.PowerShell.Commands.ImportModuleCommand
And now the strange thing - the module with the "0.0.2" version exists. I can successfully list it (with Get-Module -ListAvailable). I can even import it and work with it, but the only way how to do it is this:
Get-Module Contoso.PowerShell -ListAvailable |
? { $_.Version -eq "0.0.2" } |
Import-Module
Everything works like a charm then. The question is: WHY? I'd like to be able to import the module with the first simple command.
EDIT:
Here is how I store the versions of the module:
Get-Module Contoso.PowerShell -ListAvailable
Directory: C:\Program Files\WindowsPowerShell\Modules\Contoso.PowerShell\Contoso.PowerShell.0.0.1
ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Script 0.0.1 Contoso.PowerShell
Directory: C:\Program Files\WindowsPowerShell\Modules\Contoso.PowerShell\Contoso.PowerShell.0.0.2
ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Script 0.0.2 Contoso.PowerShell
And sorry for confusion - I do NOT have paths to each version in the PSModulePath environment variable.

Answer 1

The reason Import-Module works is because it uses a different parameter set; one where it accepts one or more [PSModuleInfo] objects, which are what Get-Module returns.
Likely, it uses the work already done by Get-Module to determine which file to load.
The next question then is "why doesn't Import-Module find the version the same way Get-Module does?" and the answer to that is "I don't know."
While they should be consistent in any case, a possible cause for trouble is your directly structure. How are you storing multiple versions?
It looks to me like your module paths are incorrect.
Your structure should be:
Contoso.PowerShell\0.0.2
Contoso.PowerShell\0.0.3
etc.
The module files go directly in the version number folder, and it shouldn't additionally have the name inside it.
You can see this structure by using Install-Module to install one from a repository and taking a look at how it handles it.