You could try to use PowerShell to disable then enable continuous crawl.
Disable continuous crawl:
#Get Search service application
$SSA = Get-SPEnterpriseSearchServiceApplication
#Get the content source by name
$ContentSource = Get-SPEnterpriseSearchCrawlContentSource -SearchApplication $SSA -Identity "Local SharePoint sites"
#Check if Continuous Crawls is already disabled
if($ContentSource.EnableContinuousCrawls -eq $False)
{
Write-host "Continuous Crawl is already Disabled on this content source!" -ForegroundColor Red
}
else
{
#Disable continuous crawl sharepoint 2013
Set-SPEnterpriseSearchCrawlContentSource -Identity $ContentSource -EnableContinuousCrawls $False
Write-host "Disabled Continuous Crawl Successfully!" -ForegroundColor Green
}
Enable continuous crawl:
#Get Search service application
$SSA = Get-SPEnterpriseSearchServiceApplication
#Get the content source by name
$ContentSource = Get-SPEnterpriseSearchCrawlContentSource -SearchApplication $SSA -Identity "Local SharePoint sites"
#Check if Continuous Crawls is already enabled
if($ContentSource.EnableContinuousCrawls -eq $true)
{
Write-host "Continuous Crawl is already Enabled for this content source!" -ForegroundColor Red
}
else
{
#enable continuous crawl sharepoint 2013
Set-SPEnterpriseSearchCrawlContentSource -Identity $ContentSource -EnableContinuousCrawls $True
Write-host "Enabled Continuous Crawl Successfully!" -ForegroundColor Green
}
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