Azure DevOps Export Import query to different project

You can use the rest api to read and create queries: Queries

Powershell example to export queries into local folder:

$user = ""
$token = "<pat>" #https://docs.microsoft.com/en-us/azure/devops/organizations/accounts/use-personal-access-tokens-to-authenticate?view=azure-devops&tabs=preview-page
$teamProject = "team_project_name"
$orgUrl = "https://dev.azure.com/<org>"
$sourceQueryFolder = "Shared Queries/Change Management"
$targetLocalFolder = "c:/temp/Change Management Queries"

$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$token)))

$queriesUrl = "$orgUrl/$teamProject/_apis/wit/queries/$sourceQueryFolder"+"?`$depth=1&`$expand=all&api-version=5.0"

function InvokeGetRequest ($GetUrl)
{    
    return Invoke-RestMethod -Uri $GetUrl -Method Get -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}    
}

$resQuries = InvokeGetRequest $queriesUrl

if (![System.IO.Directory]::Exists($targetLocalFolder))
{
    New-Item -Path $targetLocalFolder -ItemType "directory"
}

if ($resQuries.isFolder -and $resQuries.hasChildren)
{
    foreach($item in $resQuries.children)
    {
        if (!$item.isFolder)
        {            
            $queryJson = "{`"name`":`"{queryname}`", `"wiql`":`"{querywiql}`"}"

            $queryJson = $queryJson -replace "{queryname}", $item.name
            $queryJson = $queryJson -replace "{querywiql}", $item.wiql

            $filepath = "$targetLocalFolder/" + $item.name

            Set-Content -Path $filepath -Value $queryJson
        }
    }
}

Powershell example to import queries from local folder:

$user = ""
$token = "<pat>" #https://docs.microsoft.com/en-us/azure/devops/organizations/accounts/use-personal-access-tokens-to-authenticate?view=azure-devops&tabs=preview-page
$teamProject = "team_project_name"
$orgUrl = "https://dev.azure.com/<org>"
$sourceLocalFolder = "c:/temp/Change Management Queries"
$targetQueryFolder = "Shared Queries/Change Management Imported" #should exist

$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$token)))

$queriesUrl = "$orgUrl/$teamProject/_apis/wit/queries/$targetQueryFolder"+"?&api-version=5.0"

function InvokePostRequest ($PostUrl, $body)
{   
    return Invoke-RestMethod -Uri $PostUrl -Method Post -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}  -Body $body
}

$files = Get-ChildItem -File -Path $sourceLocalFolder

foreach($wiqlfile in $files)
{
    $wiqlBody = Get-Content $wiqlfile

    InvokePostRequest $queriesUrl $wiqlBody
}

Example to copy a query folder content from one team project into another one in the same organization through rest API:

$user = ""
$token = "<pat>" #https://docs.microsoft.com/en-us/azure/devops/organizations/accounts/use-personal-access-tokens-to-authenticate?view=azure-devops&tabs=preview-page
$teamProjectSource = "source_team_project_name"
$teamProjectTarget = "target_team_project_name"
$orgUrl = "https://dev.azure.com/<org>"
$sourceQueryFolder = "Shared Queries/Change Management"
$targetQueryFolder = "Shared Queries/Change Management" #should exist

$queryObject = [PSCustomObject]@{
    name = $null
    wiql = $null
    columns = $null
    sortColumns = $null
}

$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$token)))

$queriesPostUrl = "$orgUrl/$teamProjectTarget/_apis/wit/queries/$targetQueryFolder"+"?api-version=5.0"
$queriesGettUrl = "$orgUrl/$teamProjectSource/_apis/wit/queries/$sourceQueryFolder"+"?`$depth=1&`$expand=all&api-version=5.0"

function InvokeGetRequest ($GetUrl)
{    
    return Invoke-RestMethod -Uri $GetUrl -Method Get -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}    
}

function InvokePostRequest ($PostUrl, $body)
{   
    return Invoke-RestMethod -Uri $PostUrl -Method Post -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}  -Body $body
}

$resQuries = InvokeGetRequest $queriesGettUrl

if ($resQuries.isFolder -and $resQuries.hasChildren)
{
    foreach($item in $resQuries.children)
    {
        if (!$item.isFolder)
        {   
            $queryObject.name = $item.name 
            $queryObject.wiql = $item.wiql
            $queryObject.columns = $item.columns
            $queryObject.sortcolumns = $item.sortcolumns
            
            $wiqlbody = ConvertTo-Json $queryObject -Depth 10

            InvokePostRequest $queriesPostUrl $wiqlBody
        }
    }
}

You can use out of box function to export and import queries. Visual Studio and Team Explorer contain that.

1. Go to the Queries Tab:

2. Edit query

3. Save as

4. Select another project