Have you completed probation period of your previous job till date or you're still on probation period. You will be eligible for NIT pay scale once that probation period is over.

lien as contained in relevant FRs are given as follows:Y. 15.3.1 FR (13) Lien means the title of a government servant to hold on regular basis, either. immediaitely or on the termination of a period or periods of absence, a post, including a tenure.

FR 22-B: Governs fixation of pay of a government servant who is appointed as a probationer or on probation or as an apprentice in another service/cadre.

If the present employer is giving the reason for not considering your benefits under technical resignation, you may first give a representation to the top management of the company seeking its intervention and accede to your request to sanction all the benefits as you hav resigned under technical resignation.

If your request is not accepted for the technical reasons as stated now, then you may file a OA before the CAT in this regard and await their disposal  for further action.

You can file a writ petition in high court for q speedy remedy

Due to technical resignation you will get the past service benefits in your new organisation.

Here you are not in lien. You are not officiating higher post after completion of probation. 

So you are not eligible for any pay protection under the said rule.

Dear Client,

Benefit of lien enjoyed by every officers who are confirmed and retained by parent department till 2 years. relieving letter is wrong and may be issued to refuse your claim to resume back if you wanted too.

Challenge the relieving letter before administrative tribunal and also ask them in RTI why no lien ?

You should file writ petition before High court against NIT for considering you for pay protection.